Sixteen people were arrested Wednesday in what federal officials described as a “brazen” smuggling attempt that involved cutting a section of the border wall in Southern California.

A white Dodge utility truck drove across the United States-Mexico border around 3:45 p.m. on Wednesday after human smugglers cut a hole in the “old landing mat border wall” near Campo, U.S. Customs and Border Protection officials said in a news release on Thursday.

Then, around 4 p.m., agents spotted a man with a truck that matched that description using bolt cutters to cut a lock on a local’s private gate, according to federal officials.