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.

Benjamin Hanil Song is accused of shooting an Alvarado police officer during an attack on 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?

A Texas firefighter pleaded for an alert amid rising flood waters. It took an hour to go out - Leaked audio provides new alert timeline as officials face scrutiny over when residents first learned of

President Trump is visiting Texas to meet with first responders, local officials and families of some of the victims in the aftermath of the catastrophic flooding. NBC News Priscilla Thompson reports from Kerrville,

President Donald Trump is in Texas to survey the damage of catastrophic floods that struck the state one week ago.