A man who was unaware of his son trying to commit suicide in the next room foiled the suicide bid after police alerted him early on Monday.

The youth had posted his video on his Facebook timeline saying he was going to kill himself with a sharp weapon, prompting the Facebook authorities to report it to the city police’s cyber cell.

The police received a mail from Facebook around 1.36am on Monday, giving details of the person and the contact numbers attached with the profile.

Cops scanned the numbers and found one of the SIM cards was registered in the youth’s name. They zeroed in on the phone’s location — a place in Nadia district. “We managed to get hold of the phone number of the youth’s father and contacted him in less than half an hour after receiving the mail from Facebook. His father was clueless and he immediately rushed to his son’s rescue,” a detective department officer said.

After speaking to the youth’s father, the city police alerted Bhimpur police station in Nadia and sought their help in the rescue. The youth’s father, along with cops, broke open the door to his son’s room and found him unconscious. He was taken to a government hospital in Nadia where he was treated for “superficial” wounds.

The youth’s family has apparently told cops he has been depressed for the past few years and that he had tried to kill himself in the past as well.