Video by Amanda Steen

STATEN ISLAND, N.Y. -- An off-duty police officer is dead after shooting himself in the head in an apparent suicide in Great Kills, according to multiple source with knowledge of the investigation.

The man was assigned to the 121 Precinct, those sources said.

His death marks the second time an officer died of an apparent self-inflicted gunshot wound on Staten Island in the past two weeks.

Police found the 33-year-old man with a gunshot wound to the head at 57 Tanglewood Drive. Officers had responded to a 911 call of a man shot inside that location, according to a statement for the NYPD's Deputy Commissioner of Public Information.

A police spokesman declined to identify the man or his occupation, pending notification of kin.

A large police presence could be seen outside the home Monday.

Neighbors said a man moved into the home within the last year and was fixing up the house.

"I don't know what goes through these boys' minds," said one neighbor. "Terrible what they have to endure."

Said another: "I saw one of the cops was upset and crying. It's terrible."

The incident was reported at 10:44 a.m., according to a police spokeswoman.

His death comes with the NYPD on Staten Island still reeling from the loss of an officer in an apparent suicide.

Yun had an apparently self-inflicted gunshot wound to the neck when police responded to his residence on Dorval Avenue in Annadale.

-- Advance news reporter Kyle Lawson contributed to the report.