FRESNO, Calif. (AP) — U.S. authorities are scheduled to announce the arrests of MS-13 gang members in California on suspicion of murder, assault and drug trafficking.

The U.S. attorney's office has scheduled a news conference on Friday in Fresno. It says the arrests occurred in Los Angeles and the rural California farm city of Mendota.

Mendota has a population of roughly 11,000 people and lies 35 miles west of Fresno in California's agriculturally rich Central Valley.

MS-13, or La Mara Salvatrucha, was formed in Los Angeles in the 1980s by refugees from El Salvador and is linked to many slayings in certain parts of the U.S. President Donald Trump has singled out the gang as a threat to the country.