Oklahoma Highway Patrol issues Blue Alert in connection with July 4 ambush in Texas. Benjamin Hanil Song, considered armed and dangerous, on Texas' 10 Most Wanted.

Benjamin Hanil Song, a former Marine reservist, is wanted in connection with the coordinated July 4 attack, according to authorities.

Blue Alerts are issued to help catch people who are believed to have wounded or killed local, state or federal law enforcement officers. Here are the criteria for a Blue Alert: A law enforcement officer must have been killed or seriously injured by an offender.

Have you seen Benjamin Song? State and federal agencies have issued a Blue Alert for a suspect who allegedly shot a Texas police officer during the attack of a U.S. Immigration and Customs Enforcement (ICE) detention facility on July 4.

Authorities have issued a Blue Alert for Benjamin Hanil Song, wanted in a North Texas ICE facility ambush on July 4 that wounded an officer.

A Blue Alert has been activated in Oklahoma for a man wanted in connection to an attack on an Immigration and Customs Enforcement (ICE) facility.According to th

A Blue Alert was issued on Wednesday for a man accused of shooting an Alvarado police officer during an attack at a U.S. Immigration and Customs Enforcement detention facility on July 4, according to the Texas Department of Public Safety and the FBI.

Benjamin Hanil Song is accused of shooting an Alvarado police officer during an attack on the Prairieland Detention Center.

The suspect, a former U.S. Marine Corps reservist, is accused of joining 11 others in an organized attack against officers at the Prairieland Detention Center.

Texas is one of several states that use Blue Alerts, but what is it, and how does it differ from AMBER Alerts?

As devastating floodwaters swept through the Hill Country in the early hours of July 4, a volunteer firefighter requested a mass emergency alert to warn residents.