An anonymous bomb threat via voicemail early Jan. 18 at Academy of Holy Angels in Richfield prompted an evacuation and police search, but no explosive device was found.

School was to resume 8:25 a.m. Jan. 19, a late start, officials at the high school said in a note to parents.

Richfield police and school staff evacuated the building, directing students who arrived at school to the Southwest Dome to wait for rides home. Phone and email messages urged others to remain home.

School officials said a similar threat was received the same morning at an Academy of the Holy Angels in New Jersey. Richfield and New Jersey police were collaboratively investigating the incident.