BALDWIN PARK (CBSLA) – Authorities are investigating the mysterious deaths of a mother and her adult son at a home in Baldwin Park Tuesday morning.

The mother, in her 70s, and the son, in his 50s, were found dead in separate bedrooms at the home where they lived together.

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Sometime before 5:23 a.m., Los Angeles Fire Department crews responded to a 911 call from the home, located in the 3900 block of Kenmore Avenue, regarding a man who was having a heart attack.

By the time L.A. County Sheriff’s homicide detectives had been called to the scene, the two victims were dead. Their names were not immediately released. Detectives would not confirm if the deaths are suspicious in nature.

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“We learned that the relationship was an adult mother and an adult son, and the cause of death at this time is still unknown,” LASD Sgt. Michael Rodriguez told reporters.

There were several other family members in the home overnight Monday, Rodriguez said. The two were last seen alive either late Monday night or early Tuesday morning.

The circumstances surrounding their deaths are still unclear. Detectives had sealed off the street Tuesday morning and set up a mobile command post as they awaited a search warrant to enter the home.

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Detectives were looking into the family’s history as part of their investigation. There was no immediate word on whether detectives had identified any possible suspects.