SAN FRANCISCO, Aug. 1 (Xinhua) -- Multiple people were killed and at least two others injured on Saturday in a shooting at an In-N-Out restaurant in Twin Falls, in the northwestern U.S. state of Idaho, authorities said.

The suspected shooter was dead, the Twin Falls police chief said at a news conference. Police did not immediately disclose the exact number of fatalities or clarify whether the shooter was included in the reported death toll.

Joshua Palmer, public information coordinator for the city of Twin Falls, told local media earlier that at least three people had been killed, and two others injured in the shooting, which began inside the restaurant before 2:30 p.m. local time (2030 GMT) and later spread to the surrounding area, Palmer said.

The Twin Falls Police Department initially described the incident as an active shooter situation and urged residents and visitors to avoid the area. Roads near the restaurant, including the Perrine Bridge, were closed while officers secured the scene and interviewed hundreds of witnesses.

Authorities didn't release the identities of the victims or the suspected shooter. They neither disclosed a possible motive nor how the suspected shooter died.

The investigation is still underway. ■