A former U.S. Postal Service employee has pleaded guilty to charges stemming from the armed robberies of USPS trucks in Los Angeles.

William Crosby, 32, of Inglewood appeared in Los Angeles federal court to answer for two counts: robbery of United States property and use of a gun in a crime of violence, according to the U.S. Attorney’s Office.

Crosby and his 28-year-old half brother, Myron, were named in an eight-count indictment unsealed in November. The Crosbys allegedly participated in the armed robbery of a USPS truck driver on March 1, 2018, after the vehicle was forced to stop on a Harbor (110) Freeway off-ramp. The indictment also alleges that William Crosby participated in the Feb. 1, 2018, armed robbery of a Postal Service driver, as well as the burglary of a Postal Service truck on Aug. 1, 2017.

As a former supervisor, William Crosby knew when the USPS transported cash generated from the sale of money orders and USPS merchandise—information that is not known to all Postal Service employees, according to the indictment, which alleges that the burglary and two armed robberies caused cash losses of about $240,000.

Myron Crosby faces trial in September.