A bomb threat to KeyArena on Sunday after the Sonics defeated the Utah Jazz was determined to be a hoax, the Seattle Post-Intelligencer is reporting.

The threat was phoned in to KeyArena about 8:30 p.m. Seattle Police said it was a man's voice, though as of yesterday the identity of the caller had not been determined, according to a Seattle Center spokesperson. Arena staff suspected it was a hoax, and most fans had already left the building when arena personnel began urging everyone out and canceling postgame plans inside the facility.