TACOMA, Wash. (AP) _ Gunmen burst into a restaurant early Sunday and opened fire, killing four people and wounding six others.

There were about 20 diners inside the Trang Bai restaurant at the time of the shootings at about 1:30 a.m., police spokesman Jim Mattheis said.

``They just burst through the door and started spraying gunfire,'' Mattheis said.

No arrests had been made, and police named no suspects in the killings.

Two of the injured were in critical condition at the Madigan Army Medical Center at Fort Lewis. The severity of the other victims' injuries was not known.

Police were not sure if the victims were restaurant employees or patrons, and authorities said they had no motive for the shootings.