A man charged with tampering with evidence in connection to the ambush on a U.S. Immigration and Customs Enforcement (ICE) detention center in Texas allegedly tried to conceal anti-government and anti-Trump documents.

"During this attack, an Alvarado Police Officer was shot and wounded," according to the FBI notice. "On July 9, a federal arrest warrant was issued for Song in the United States District Court, Northern District of Texas,

Authorities are searching for 32-year-old Benjamin Hanil Song, a former Marine accused of attempted murder and aiding terrorism after a coordinated July 4th ambush on a North Texas ICE facility left a police officer wounded.