A man died by suicide in Uttar Pradesh's Ghaziabad after killing her wife in Haryana's Gurugram and leaving their two-year-old son locked in a room with the body lying in a pool of blood.

The man, identified as Gaurav Sharma (30), allegedly slit his 23-year-old wife Laxmi's throat?with a sharp-edged weapon and thrashed her in the head with a brick, news agency PTI quoted police as saying.?Gaurav?also hit his son with a brick.

He fled the scene and later died by suicide by jumping from the Kaushambi metro station in Ghaziabad, police added.?

The disturbing incident took place on Sunday afternoon after the couple had an argument in their rented first-floor accommodation in S Block of Gurugram's DLF Phase 3, police said.

The neighbours, alerted by the cries of the kid, informed the security guard who went to their house and found it locked. He then called the police, who broke the door open and found the woman's body and the injured child crying near it.

The woman's mobile phone was found near the toilet seat, police said.

The injured child was rushed to a civil hospital from where he was referred to Delhi's Safdarjung hospital and was later handed over to the woman's family members who took him to their native place Agra, DLF Phase-3 police station SHO inspector Dinkar said.

"All the circumstantial evidence suggest that Gaurav Sharma, who died by suicide, had killed his wife Laxmi. We have filed an FIR of murder against him," SHO inspector Dinkar said.

The woman's body was handed over to her kin after a postmortem, he said.

Police said that the two deceased were from Uttar Pradesh's Agra and had an arranged marriage three years ago. Gaurab Sharma worked with a private company but was unemployed lately, police said, adding that they had moved into their current flat around six months ago.

Gaurav had fled after the incident and the police were searching for him.?His phone was found to be out of service, however, the police at around 11:45 pm received information that a person had allegedly died suicide after jumping from the Kaushambi metro station in Ghaziabad.?? ?

A police team reached Kaushambi and confirmed that it was Gaurav Sharma, said police.

Trans Hindon Zone Deputy Commissioner of Police (DCP) Shubham Patel told PTI the body of the deceased has been sent for post-mortem. Inspector Dinkar of Gurugram said, "The Ghaziabad police taking action in suicide case.?

ACP DLF, Vikas Kaushik,?said, "We are investigating the matter from all angles... the cause behind the murder will be known soon."

(With PTI inputs)