Police detectives are investigating an overnight burglary at the Seattle headquarters of the state Democratic Party.

It was reported at 5:30 a.m. Tuesday by someone arriving for work who found a broken window and open door.

Officers searched the building and area for suspects and found none. It's not yet known what was taken.

Spokesman Mark Jamieson says there's no immediate indication of a political motivation. He says it's a burglary in a building that happens to house campaign folks.

State Democrats Communications Director Benton Strong says the building at 901 Rainier Ave. S. also serves as an office for Organizing for America and Jay Inslee for Washington.

Strong says staff and Election Day volunteers continue to work on getting out as many votes as possible before the 8p.m. deadline.