Charges were pending on Wednesday for a man suspected of the fatal beating of another man at a subway station in Brooklyn .
The 25-year-old suspect was arrested at around 10 p.m. Tuesday when NYPD officers assigned to the subway in Times Square spotted him.
Police Commissioner Jessica Tisch praised the department's domain awareness system, which sent photos of the suspect to officers' phones, resulting in the suspect's quick arrest.
Meanwhile, investigators released new details on what lead to the deadly attack.
Police say the suspect was pulling on the exit gate at the Jay Street-MetroTech station, attempting to gain entry around 3 p.m. Tuesday when the victim approached.
The two exchanged words, and the suspect sucker punched his older victim, who appears to be in his 50s, knocking him to the ground.
According to investigators, video from MTA security cameras recorded the suspect then punching, kicking, and stomping the victims' head 15 times while he was on the ground.
Police say the suspect was then seen boarding a Bronx-bound No. 2 train.
The victim suffered a fractured skull and was taken to New York-Presbyterian Brooklyn Methodist Hospital in critical condition, and was later pronounced dead.
Detectives are looking at similarities between the fatal beating and the death of a worker while confronting a shoplifter in Hells Kitchen last month .
Authorities say the suspect has 17 prior arrests, including for assault earlier this year, petit larceny and graffiti.
It was the fourth homicide in the subway system this year, down from eight at this time last year.
Transit crime is down 4.3% so far this year. In the month of September, serious crime was down 31% from last September.
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