TOKYO (AP) _ A disgruntled former employee of tiremaker Bridgestone Corp. committed suicide Tuesday by stabbing himself with a knife outside the company president's office.

Masaharu Nonaka, 58, died while undergoing emergency treatment at a hospital, said a Tokyo Metropolitan Police official, who declined to be named.

No one else was injured. Bridgestone President Yoichiro Kaizaki was unharmed after his unscheduled, mid-morning meeting with the man at the company's headquarters in central Tokyo.

Nonaka complained to the president about an early retirement program at Bridgestone Sports Co., a wholly owned subsidiary of Bridgestone where he was transferred in 1992, a company spokeswoman said.

During the meeting, Nonaka became agitated and threatened to kill himself, police said.

He then stripped down to his underwear, pulled out a 14-inch sashimi knife and stabbed himself in the stomach, they said.

Kaizaki was not taken hostage and did not witness the stabbing, police said.