11/23/2013 03:17 pm ET Updated Nov 23, 2013

72-Year-Old Allegedly Pushed Onto Subway Tracks In Harlem Is In Critical Condition

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A 72-year-old man was left in critical condition Friday afternoon after he was allegedly pushed onto subway tracks in Harlem. The victim, identified as Chinese immigrant Shou Kuan Lin, is currently in a coma and fighting for his life at St. Luke's Hospital.

Rudralall Baldeo, a 57-year-old homeless man, is in custody following the frightening incident at 145th and St. Nicholas Avenue. He was charged with attempted murder and felony assault, CBS Local reports.

Police are still investigating the circumstances that led to the man tumbling onto the subway tracks.

Lin was standing with his wife on the northbound platform of the A and C line when the couple was approached by Baldeo, who The New York Post described as a "drunken Guyanese man who distinctly resembles Santa Claus." The victim was then either shoved or fell onto the tracks.

Bystanders were quick to run to the elderly man's aid. Several people reportedly jumped down onto the tracks to help Lin back up onto the platform before the train arrived.

Lin suffered a fractured skull and broken collar bone in the plunge. He slipped into a coma shortly after he arrived at the hospital.

Friday's incident follows several cases of people falling -- or being pushed -- onto subway tracks throughout the city in recent years. In September, a Pace University student managed to escape after a homeless man threw him onto the tracks at Fulton Street.

The MTA does not have a contingency plan for straphangers who somehow wind up on the subway tracks.

"Due to the varying lay-outs of stations and roadbed construction there can be no single policy for a person finding themselves on the tracks," MTA spokesman Kevin Ortiz said last year following the death of 58-year-old Queens man Ki Suk Han.