The suspect in a 2018 homicide in Arlington died in jail Monday morning.
Jitesh Patel, 43, was found unconscious in his cell at the Arlington County Detention Center, police said. A law enforcement source told News4's Julie Carey that Patel killed himself.
Arlington County sheriff's deputies and nurses tried to resuscitate Patel before fire department medics arrived, police said. A medic pronounced him dead at the scene at 6:05 a.m.
The medical examiner will determine the cause of death.
Patel was charged with murder in the death of John Giandono, 40.
Giandoni's sister found him dead in his home at Stafford Square March 16, 2018. She broke a window to get inside when she couldn't reach him.
Police arrested Patel four months later at his home in Howard County, Maryland, following an intense investigation.
Prosecutors believe Patel killed Giandoni because Giandoni shared custody of a son with a woman Patel was obsessed with and she was unhappy about the custody arrangement.