Investigators are now seeking potential victims
LOS ANGELES — On Aug. 8, following an investigation spanning several weeks, Homeland Security Investigations (HSI) Los Angeles and the West Covina Police Department executed a federal warrant and arrested an individual for possession of child sexual abuse material.
The suspect, Matthew Mullen, a 39-year-old resident of West Covina, was arrested and booked for possession of over 600 obscene images and possession of minor in sexual act/pornography material.
Due to Mullen’s volunteer efforts in local organizations, investigators believe there may be additional victims. HSI Los Angeles and the West Covina Police Department are asking for assistance from the public. Anyone with information that may assist in the investigation is asked to contact West Covina Police Detective Iside at 626-939-8520 or contact the HSI Tip Line at 877-4-HSI-TIP and reference the Matthew Mullen investigation.
Learn more about HSI’s mission to increase public safety in your community on X, formerly known as Twitter, at @HSILosAngeles.
About HSI
HSI is the principal investigative arm of the Department of Homeland Security (DHS), responsible for investigating transnational crime and threats, specifically those criminal organizations that exploit the global infrastructure through which international trade, travel and finance move. HSI’s workforce consists of over 10,000 employees, assigned to 235 offices within the United States and 93 overseas locations in 56 countries. HSI's international presence represents DHS’s largest investigative law enforcement presence abroad and one of the largest international footprints in U.S. law enforcement.