EVENDALE, Ohio (AP) _ A truck driver ``after the one that screwed me over'' walked into his employer's office Friday and shot three people to death, then calmly waited to be arrested, police said.

Employees at Trans-Continental Systems Inc. hid under their desks or ran screaming from the building as the gunman _ carrying two pistols _ opened fire.

After the shooting, Gerald Clemons, 53, of Cincinnati, walked out of the two-story building and surrendered to the first police officer to arrive, witnesses said. He was jailed on charges of murder and attempted murder.

``I saw the man come out and lay the weapons on the back of a car and then he just leaned against the car real relaxed and waited for the police to come,'' Ellis Pullins, who was nearby, told The Cincinnati Post.

``He made no bones whatsoever about going with them,'' said Wilma Horstman, a clerk at a business across the street. ``He put his hands behind his back and went.''

Police initially said Clemons had been fired several months ago from Trans-Continental. But company attorney Lance Cox said that was not true.

``We don't know why this happened,'' Cox said late Friday. ``We anticipate setting up a fund for the victims' families. Our thoughts right now are with the victims.''

A police complaint said Clemons told a witness that ``I'm after the one that screwed me over.'' Details about who he may have been targeting were not available.

The suspect also told an off-duty police officer who arrived at the scene, ``I shot those people,'' according to another police complaint.

Dave Pace, a vice president at Trans-Continental headquarters in Chicago, refused to comment.

Christina L. Teetzel, 30, of Lebanon, and David Kreamelmeyer Jr., 47, of North College Hill, died at hospitals within two hours of the shooting. Robert Kinney, 40, of Amelia, died about eight hours later. It was not clear whether the attempted murder charge would be upgraded because of his death.

The company operates 42 tractor-trailer rigs out of Evendale, a suburb of 4,000 people about 10 miles north of Cincinnati.