BIRMINGHAM, Ala. — A man fired a day earlier from UPS killed two co-workers and then himself Tuesday after he donned a work uniform and evaded security by entering through a truck dock in the rear of the building, according to police and the company.

The two former UPS co-workers were shot dead within minutes Tuesday, and the shooter, identified by police as Kerry Joe Tesney, lay dead atop his gun from what police called a self-inflicted wound.

The shooter entered after about 80 drivers had left for the day to deliver packages from the Birmingham center, UPS said, possibly avoiding even more bloodshed.

“It was a relatively small crew that was remaining,” said Steve Gaut, a spokesman for the shipping company.

Authorities haven’t released the slain people’s names but said they were members of management.

Pastor Bill Wilks of NorthPark Baptist Church described the 45-year-old Tesney of the Birmingham suburb of Trussville, as having been troubled over his work and financial situation but said the shooting was unbelievable.

“I think it’s been an ongoing situation,” Wilks said. “In his own spirit he’s been troubled, and he’s asked for prayer about that.”

Tesney and his wife have two children. The family has been active members of the church since 2003, Wilks said.

“He’s just a guy who went through his trials at work. Certainly we have prayed for him,” Wilks said.

The church held a prayer service Tuesday night for the Tesney family and the slain workers.