() A manhunt is underway for a man accused of shooting at officers in an ambush at an Immigration and Customs Enforcement detention center in Alvarado, Texas.

Benjamin Hanil Song has been placed on Texas’ Top 10 Most Wanted List and the FBI and Texas Gov. Greg Abbott’s office are offering a reward of up to $35,000 for information leading to his arrest, authorities said on Thursday.

Song is accused of taking part in a July 4 attack on an ICE detention center, during which a police officer was shot and wounded.

According to authorities, he was part of a group of up to a dozen people who, dressed in black, military-style clothing, began shooting fireworks toward the center and spraying graffiti while two assailants fired on ICE officers and police.

Song, a U.S. Marine Corps Reserves veteran, is accused of firing two AR-15-style rifles at three officers. He was waiting in the woods as the group lured the officers out of the facility, charging documents state.

The guns were found in the woods and are believed to have been bought by Song. One had a binary trigger on it, which doubles the rate of fire of a semi-automatic gun, according to the court documents.

Ten other people have been taken into custody in connection with the crime, but Song has not been apprehended.

“The targeted attacks against our federal law enforcement officers is a crime and must end,” said Governor Abbott. “Criminals such as Benjamin Hanil Song will be arrested and prosecuted to the fullest extent of the law.”

Song is facing state charges for aiding terrorism, aggravated assault with a deadly weapon on a public servant and engaging in organized crime and federal charges of attempted murder of a federal officer and discharging a firearm in furtherance of a crime of violence.

Song is described as an Asian male, five feet six inches tall and weighing 150 pounds, with brown eyes and black hair.

Officials say he should be considered armed and dangerous.

To be eligible for the $10,000 reward, anyone with information should call the Texas Crime Stoppers hotline at 1-800-252-TIPS (8477), submit a web tip through the Texas 10 Most Wanted website, or submit a tip online.