Police are in pursuit of a depraved individual accused of sexually assaulting a deceased man on a  New York City subway. The alleged necrophiliac is suspected to have committed the vile act on an R train at Whitehall Street subway station shortly after midnight on Wednesday, April 9.

The suspect then made his escape from the station and is currently the target of a NYPD manhunt. The unidentified offender is described as approximately 5ft9 inches tall, weighing around 195lbs, with black hair and brown eyes. His last known residence, according to the New York Post, was Manor Avenue in the Soundview area of the Bronx.

The victim, who has not been identified, died of natural causes, sources revealed. They do not believe there was any prior acquaintance between the two individuals.

This incident occurred just two days after the NYPD were notified of a horrifying assault inside a New York subway station on Monday, where a man allegedly attempted to rape a woman, reports The Mirror.

The purported victim, aged 30, was attacked at Rutgers Street and East Broadway station on the Lower East side while waiting for a northbound F train around 2.30am. According to police, the man approached the woman from behind and attempted to converse with her in Spanish. When she tried to escape via an escalator, he pursued her.

The man then encircled her with his arm, forced her trousers down and attempted to rape her, stated the NYPD. The woman tried to call 911 but the attacker seized her phone and hurled it across the side of the escalator, authorities reported.

The assailant, caught on CCTV footage exiting the station, is thought to be between 25 and 35 years old, approximately 5ft4 inches tall, of slim build with light skin and black hair. He was last spotted donning a white hoodie, dark blue jeans and white trainers.

The victim, on the other hand, was rushed to hospital where she remains in a stable condition.