A straphanger was killed in a freak accident when he fell onto the tracks after his bag got caught between subway doors in Brooklyn during the Monday evening rush, according to police.

Yaw Boahene, 57, who used a cane, was exiting a northbound A train at the Utica Avenue station in Bedford-Stuyvesant around 5:50 p.m. when his blue plastic bag got stuck in the doors as the subway started to pull away, cops and sources said.

Boahene was still holding onto the bag as the train began to roll out of the station, and desperately banged on the doors with his cane as it accelerated, cops and sources said. 

Sneakers are seen at the scene where a person was fatally struck by a train. William Miller

But the plastic bag was so thin that the sensors on the doors may not have even detected something wedged between them, according to a source familiar with the incident. 

Boahene’s desperate bid for his belongings ended tragically when he slammed into a wall as the train reached the end of the platform, according to the sources. 

He then tumbled onto the tracks behind the train, the sources said. He was not run over by the train, which had already left the station, according to the sources.

First responders rushed to the subway station and declared the man dead at the scene.

The harrowing incident wasn’t deemed criminal. Police at first said the victim’s backpack had gotten caught, but later clarified it was actually a blue plastic bag.

“His bag got caught in the door and the train just kept moving,” one horrified woman who was on board the train at the time told ABC 7 New York, calling it “super traumatic” to witness.

“I didn’t see the man for a while [and] the train kept moving and you could sort of hear the sounds and there were people screaming within the train and then also people screaming on the platform and I was like ‘what the hell is going on?’” she said.

“It was super traumatic, hearing it and also seeing the train continue to move because I don’t think the conductor noticed at all at first,” she recalled, adding that she called 911 because no MTA staff were at the station.

The scene where the man was dragged by the subway train. William Miller

Boahene’s last known address was a shelter in East Flatbush, according to police. 

A 75-year-old man who had been living at the shelter for two months and only gave his first name, Guy, said he’s often feared meeting a similar fate while lugging around a bag with a metal handle. 

“I always think something like that can happen to me, too. I always feel that this thing can be caught between the train [doors] and drag me,” he said, pointing at his bag. “So I’m going to be more cautious when I take the train because this can happen to [anybody], especially when you rush and you want to get out.”

ESU, EMTs and NYPD are at the scene of a person fatally struck by a train at the Utica Ave Station of the A, C line in Brooklyn. William Miller

The MTA, in a statement, called it a “terrible accident,” but wouldn’t say if there were any security mechanisms that could have helped prevent the tragedy.

A 35-year-old man who lives close to the subway station told The Post he was getting off the A train on the opposite side of the station when he saw cops and firemen rushing down the stairs.

“The conductor should have seen him,” he said. “You should know when your doors are not closed.”

Similar frightening incidents have occurred on the subway before, including a fatal one in 2022 when a commuter’s clothing or bags got caught in the closing doors of a train car at the Columbus Circle station in Manhattan.

In 2003, a grandmother suffered a dislocated right arm after she was dragged several feet along the platform by a subway when her arm got caught in the door on a Manhattan subway, the New York Daily News reported at the time.

A 12-year-old girl survived a 2001 incident in which she was dragged some 20 feet across the platform when her ankle got caught in a subway door, causing her to bang her head into a metal pillar as her horrified mother and sister helplessly watched on and screamed for help.

The sixth-grader was freed just before the train left the station and avoided serious injury.