Unbelievable! Son beheads mother, plays with her head before committing suicide.

How sick can some people be! This best describes the conduct of a 35-year-old man, Derek ward, of Long Island, New York, USA, who murdered his mother, cut off her head and used it as football on the streets before jumping in front of a train and killing himself.

The headless body of the murdered woman identified as Prof. Patricia Ward, 66, was found near her Farmingdale home. The grim murder was capped off when Derek allegedly kicked his mother's head across the street like a soccer ball, neighbors told investigators, according to the New York Daily News.

The woman was wearing only a bra and pants when police found her, according to one witness.

According to the police officer Frank Imperial:

"The body's feet were at the curb, the shoulders were at the middle of the street. The head was across the street.

I've seen some gruesome stuff in my years of living but nothing like this. I didn't expect to see something like this, especially not out here."

A neighbor told the Daily News that he saw blood on the floor of the building.

"It was all over, as if someone could've been pulling a body. You could see the smears going down the stairs."

An eastbound train was delayed nearly two hours after striking Derek Ward around 8:15 p.m., the station reported. Passengers were not allowed off until after another train arrived at nearly 10:30 p.m.

Patricia Ward was a beloved professor at nearby Farmingdale State College, according to WABC.

Derek was revealed by police to have been previously arrested on gun possession and criminal mischief. Cops also said he has a decade-long history of documented mental problems.