On April 10th at approximately 1:10pm, Dubuque Police were notified of a general threat of violence involving Hempstead High ...

A suspicious phone call prompted an external lockdown at Hempstead High School in Dubuque on Thursday afternoon, according to ...

A Dubuque high school was placed on external lockdown this afternoon while police investigated a threat that was ultimately deemed not credible.

DUBUQUE, Iowa (KCRG) - A lockdown has been lifted at Hempstead High School following a suspicious phone call to the school Thursday afternoon. Hempstead High School was placed on lockdown at ...