The U.S. Marshals Service is currently leading an international manhunt for Matthew Christopher Flores Semyonov, a 27-year-old suspect wanted in connection with the deaths of his parents. The investigation began on August 4, 2026, when Avondale police responded to a welfare check request from family members at the Flores Semyonov residence in Litchfield Park, Arizona. Upon arrival, officers discovered large amounts of blood inside the home and evidence suggesting attempts to clean the scene. Subsequent searches of the property revealed two decomposing bodies buried in the backyard. As of the latest reports, the identities of the victims have not been publicly released. Authorities believe that Flores Semyonov fled the United States to avoid prosecution, prompting the U.S. District Court for the District of Arizona to issue a federal arrest warrant. The U.S. Marshals Service has stated that Flores Semyonov should be considered dangerous and advised the public not to approach him or attempt to apprehend him. U.S. Marshal Van Bayless emphasized the agency's commitment to using all available domestic and international resources to locate the suspect and bring him to justice. The Avondale Police Department remains the lead agency for the investigation into the disappearance and suspected deaths. The suspect's family has issued a statement expressing devastation over the events and confirming their full cooperation with law enforcement, while also requesting privacy. Individuals with information regarding the whereabouts of Matthew Christopher Flores Semyonov are urged to contact the U.S. Marshals' 24-hour tip line at 1-877-WANTED2 or submit tips anonymously through the agency's mobile app or website. The case continues to develop as federal and local authorities work together to resolve the matter.