Authorities have not provided details about the motive of the shooter who opened fire on Border Patrol agents at an annex site in Texas Monday.

The July 4 attack is just one in a series of recent attacks against federal immigration officers. On Monday, July 7, U.S. Border Patrol agents in the Rio Grande Valley fatally shot a Michigan man who launched an attack at their McAllen facility before dawn.

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

Benjamin Hanil Song was charged with three counts of attempted murder and three counts of discharging a firearm during a violent act, the FBI announced Wednesday.

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.

The officer was shot in the neck on Friday, the night of the Fourth of July , after reporting to the Prairieland Detention Center in Alvarado, about 40 miles (65 kilometers) southwest of Dallas. He was treated at a hospital and released, the Johnson County Sheriff’s office said.

Officials from Euless and Plano are expected to provide an update on a homicide investigation during an afternoon news conference.

A nonprofit born out of the mass shooting in Uvalde, Texas, is urging the Maine Attorney General's Office to revisit how more than $6 million in Lewiston shooting relief donations were distributed.