The gunmen fled the scene and is still at large with the rifle.
Shots were heard in the Cascade Mall in Burlington, Washington at around 7 pm as people began hiding in dressing rooms and locking doors to stores. The mall was evacuated at around 8:30 pm.
Four woman and one man were killed all in Macy's Department store.
The attacker is described by police as a "Hispanic male wearing grey" and was last seen travelling toward Interstate 5 motorway.
the scene - the place where the incident happened
at large - still free from (police) but wanted by the police
dressing room - a room in a store where people try on clothes
to evacuate - to suddenly leave an area (as a large group of people) because of danger