A Chicago firefighter who was wounded in a mass shooting in West Pullman after a birthday party last year has died.

Timothy Eiland, 33, a father of five, was pronounced dead Monday at South Suburban Hospital, according to the Cook County medical examiner’s office.

Fire officials confirmed Eiland’s passing, saying “this senseless act has changed the fabric of Tim Eiland’s family, our department and our city.”

Eiland was walking with his sister Elishama Wright joking and laughing after a surprise birthday party on Sept. 11 when gunfire broke out. As people started to scramble, Wright found him “on the ground with blood squirting from his face,” she told the Chicago Sun-Times at the time.