The U.S. Marshals Service is currently leading an international manhunt for Matthew Christopher Flores Semyonov, who is wanted in connection with the deaths of his parents, Hector and Larissa Flores. The investigation began on August 4, when Avondale police officers conducted a welfare check at a residence located near the intersection of Litchfield and Indian School roads in Litchfield Park, Arizona. During the check, officers discovered signs of foul play inside the home, including a large amount of blood. Subsequent searches revealed the decomposing bodies of Hector and Larissa Flores buried in the backyard of the property. On August 11, Avondale police officially confirmed the identities of the victims. Matthew Christopher Flores Semyonov was identified as a suspect following the search of the family home. He is now facing federal charges including first-degree murder, domestic violence, and abandonment or concealment of a dead body. Authorities believe that Flores Semyonov fled the United States to avoid prosecution, prompting Avondale police to request federal assistance on August 7. The U.S. Marshals Service has issued a wanted notice featuring a photograph of the suspect, which was taken on August 3, one day prior to the initial welfare check. The Maricopa County Office of the Medical Examiner is currently pending the determination of the manner and primary cause of death for both victims. The public is urged to contact the U.S. Marshals Service or Avondale police with any information regarding the location of Matthew Christopher Flores Semyonov. This case remains active as federal and local law enforcement agencies continue their efforts to locate and apprehend the suspect.