Patrick Alford, Jr., vanished from a Brooklyn foster home on Jan. 22, 2010, at age 7.

The Staten Island man who has been searching for his missing son for two years has been shot in the head and critically wounded, according to the Staten Island Advance.

Patrick Alford Sr., 29, was shot Monday afternoon inside a Brooklyn apartment. The victim’s attorney said Alford had been putting up missing posters for his son around a housing development where he was not welcome.

Alford’s son, Patrick Jr., disappeared at age 7 from a Brooklyn foster home on Jan. 22, 2010. He was last seen in the lobby of the Spring Creek Development in East New York. He had been placed with foster mother Librada Moran after his biological mother, Jennifer Rodriguez, was arrested for theft.

Alford Sr. was taken to Brookdale University Hospital. He remains in critical condition.