A Kauai man was found dead in Hayward, Calif. earlier this month at a vacant home, according to Hayward police.
The man was identified as 29-year-old Marcus Brown.
Investigators say he suffered a head injury, but a coroner's report will determine an official cause of death .
Hayward police say an autopsy revealed he had been dead for less than 24 hours when he was found in the early morning hours on Sept. 5 by a homeless man. A cause of death has not yet been determined.
Police say a friend of Brown from Hawaii reported him as a missing person with the San Jose Police Department on Sept. 9.
According to Kauai Police Department records, Brown was arrested in 2011 for 2nd degree terroristic threatening and in 2012 for failure to appear.
However, Kauai county officials say KPD is not involved in a missing persons case involving Brown.