A July 2 lockdown of the Pease Air National Guard Base was prompted by one person who reported hearing gunshots, but that person had never heard gunshots before, Police Chief Michael Bilodeau said Monday.

Bilodeau said police followed up with that person, who reported hearing gunshots to a supervisor, who in turn called base security. The initial late-morning report led to a police response from multiple agencies, the base being put on lockdown and a subsequent search.