A clerk was shot to death at a post office today, and police were holding a possible suspect identified in broadcast reports as a part-time mail carrier.

Postal inspector Linda Kirksey confirmed that the shooting happened just before noon at the Northaven postal station in northwest Dallas.Kirksey would not say who was involved, but broadcast reports said the victim was a woman who worked for the Postal Service for 13 years. They said the suspect was a 27-year-old man who had worked part-time for less than a year at the office.

Customers may not have seen the attack because it happened at the back of the building, a police officer said. He said no one else was wounded.