SANTO DOMINGO, Dominican Republic (AP) — A wounded David Ortiz was recovering from exploratory surgery in Boston on Tuesday as investigators in his native Dominican Republic tried to figure out who shot the former Red Sox slugger and why.

Ortiz spokesman Leo López said Big Papi was expected to remain in intensive care for at least 48 hours.

The 43-year-old retired athlete was flown to Boston on Monday night for further treatment, arriving in an air ambulance provided by the Red Sox, after doctors in the Dominican Republic removed his gallbladder and part of his intestine.

Ortiz was shot at close range in the torso Sunday night by a gunman who approached him from behind at a Santo Domingo bar, authorities said.

Police have said the operator of the motorcycle carrying the assailant was captured and beaten by a crowd at the bar. But the gunman has not been arrested, and investigators were trying to establish whether Ortiz was the target.

Ortiz led the Red Sox to three World Series championships — including, in 2004, their first title in 86 years of futility.

With his ferocious swing and his big smile, Ortiz became one of the most beloved sports heroes in Boston history. Fans responded to the shooting with an outpouring of prayers and wishes for a speedy recovery.

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SANTO DOMINGO, Dominican Republic (AP) — David Ortiz was back in Boston on Monday night for medical care, a day after authorities said the former Red Sox slugger affectionately known as Big Papi was ambushed by a gunman at a bar in his native Dominican Republic.

A plane carrying the 43-year-old retired athlete landed after a flight from the Dominican, the team said.

Ortiz had been in stable condition in intensive care at a Santo Domingo hospital after doctors removed his gallbladder and part of his intestine, according to his spokesman, Leo López. He said Ortiz's liver was also damaged in the shooting Sunday night.

Ortiz is one of the most beloved figures in sports history in the Dominican Republic and Boston, a fearsome power hitter with a ready smile. He led the Red Sox to three World Series championships, was a 10-time All-Star and hit 541 home runs.

In January, Ortiz signed on as a Foxwoods Resort Casino "ambassador," agreeing to make promotional appearances at the casino. He has been featured in Foxwoods' advertising, appearing on signage throughout the casino, on highway billboards, in television commercials and on social media.

He last appeared at Foxwoods in March.

"David Ortiz is a much beloved figure to us, and is one of the most kind and caring humans we know," Rodney Butler, chairman of the Mashantucket Pequot Tribe and the casino's interim chief executive officer, said in a statement late Monday afternoon. "We are deeply saddened to hear of the incident which occurred Sunday evening, and we are encouraged to know that he is now in stable condition and on the road to recovery. 'Big Papi' is a true and dear friend to the entire Foxwoods Resort Casino team and the Mashantucket Pequot Tribal Nation, and we are sending him strength, resiliency and love."

Dozens of fans crowded the hospital earlier Monday, causing a traffic jam. In the U.S., fans prayed for his recovery and wished him well, with New England Patriots star Julian Edelman assuring him on Instagram: "Papi, all of New England has your back."

The Red Sox offered "all available resources" and sent an air ambulance to bring him back to Boston.

"He's on the Mount Rushmore of Boston sports," said Eddie Romero, the team's assistant general manager.

The club asked fans to observe a moment of reflection shortly before playing the Texas Rangers at Fenway Park and posted on the videoboard: "We send our love to David Ortiz."

Ortiz was at the Dial Bar and Lounge in Santo Domingo on Sunday night when a gunman approached from behind and shot him at close range in the torso, authorities said.

The gunman was not immediately identified or arrested and the motive for the shooting was under investigation, with authorities trying to determine whether Ortiz was the target.

The operator of the motorcycle that was carrying the gunman was captured and beaten by a crowd of people at the bar, authorities said.

Eliezer Salvador, who was at the scene, said the gunman said nothing, just fired once. Salvador then drove a wounded Ortiz to the hospital, telling reporters they had a brief conversation in the car as he urged the baseball great to stay calm and breathe.

"Do you have any problems with anyone?" Salvador recalled asking him, to which Ortiz replied: "No, my brother, I've never wronged anyone."

Salvador held up Ortiz's bloody belongings for reporters, along with some of his jewelry. He also apologized for hitting several cars while rushing to the hospital: "That wrongdoing was justified."

Ortiz's father, Leo, said he had no idea why someone would have shot at his son.

"He is resting," the elder Ortiz said. "Big Papi will be around for a long time."

He added that he is pleased with the medical attention Ortiz has received but that he would be transferred to Boston so he can be with his wife and the Red Sox medical team.

Two other people were wounded, including Jhoel López, a Dominican TV host who was with Ortiz. Police believe López was wounded by the same bullet, said National Police Director Ney Aldrin Bautista Almonte. López was shot in the leg, and his injuries were not life-threatening, said his wife, Liza Blanco, who is also a TV host.

Police did not identify the third person or detail that person's injuries.

The bar is in a bustling nightlife district packed with dance clubs and expensive bars that Ortiz is known to frequent.

Chicago White Sox pitcher Ivan Nova, who's from the Dominican, said the shooting rattled him.

"The way that everything is going right now back in my country, I've got to be honest, I'm not very happy to say what is going on right now over there," Nova said. "A lot of times I see guys who play on my team coming to the United States to live. The dream that you have as a baseball player is to have a good career, and then go back home and spend time with your family. Now you've got to think about if DR is a safe place for you to be in. It's a tough situation."

Ortiz, who retired after the 2016 season and lives at least part of the year in the Dominican Republic, is often seen getting his cars washed and hanging out with friends, including other baseball players, artists and entertainers.

The Red Sox retired his number, 34, in 2017, and Boston renamed a bridge and a stretch of road outside Fenway Park in his honor. He maintains a home in Weston, on the outskirts of Boston.

Ortiz galvanized the city in the aftermath of the 2013 Boston Marathon bombing that left three people dead, bellowing through a megaphone at Fenway Park: "This is our (expletive) city!"

"In 2013, when we needed David Ortiz the most, he was there for us," Red Sox president and CEO Sam Kennedy said Monday. "Our focus is on his health and on getting him back here for treatment."

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Associated Press reporter Bill Kole in Boston contributed to this report.

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