After receiving a tip from Grumpelt's father, Mesa officers went to the suspect's apartment Monday and discovered the body of 39-year-old Melinda Raya on a bedroom floor under several sheets. Investigators say the body was in an advanced state of decomposition and surrounded by air fresheners.
Authorities say on May 19, Grumpelt struck Raya several times in the abdomen after learning she had cheated on him. When she became unresponsive, police say Grumpelt panicked and tried to hide her body.