<p class="speakable">The Los Angeles County Sheriff's Department (LASD) confirmed multiple people are dead after an explosion Friday morning at the agency's training facility in East Los Angeles.</p><p class="speakable">The explosion, which happened at about 7:30 a.m. local time at the Biscailuz Training Center, killed at least three sheriff's deputies, LASD sources told Fox News.</p><p>Ambulances were requested for injuries regarding a possible explosion, according to L.A. County Fire.</p><p>The facility is being evacuated.</p><p>The Federal Bureau of Investigation (FBI) in Los Angeles confirmed it is responding. </p><p><i>This is a developing story. Check back for updates.</i></p>