Another construction worker in New York City died Thursday morning, but this time it was no accident.

Days after being fired from the construction site for the ultra-luxury Waterline Square development, a carpenter returned and shot the foreman who let him go on the 37th floor of the Three Waterline Square building, striking him in the head and killing him, the New York Daily News reports.

The worker then took the elevator down to the fifth floor where he took his own life, according to police. First responders pronounced the foreman, identified as 37-year-old Christopher Sayers of Plainview, Long Island, dead at the scene, and found the shooter's body during a sweep of the building. Both were members of the carpenters union Local 212.

Waterline Square developer GID Development Group had tasked Tishman Construction as the general contractor for the three towers of the development. Tishman is also the general contractor at Manhattan West, where a worker fell to his death in June.

Sayers's death marks the ninth construction site fatality this year in New York City, with the other eight due to accidents that prompted the New York City Council to enact stricter training requirements for work sites in a bill passed on Sept. 28. The bill was met with delays and changed to lessen training time requirements after some groups raised concerns that it would disproportionately affect nonunion and minority workers.

Waterline Square, a three-building development combining rental apartments and condominiums going up on the Upper West Side, is reportedly expected to bring in $1.15B in condo sales to Chinese-backed developer GID. Condos start at $2M, and move-ins are estimated to begin sometime in 2018.