Authorities said they found four members of a family slain Friday in a home in central Maryland, but they said they were not searching for any suspects.

State troopers found the four — a man, a woman, a boy and a girl — about 5:30 p.m., Maryland State Police spokesman Greg Shipley said.

"Troopers who were inside say it obviously was a murder scene," Shipley said. "Each body sustained trauma." He said it was not clear how the injuries were inflicted.

Shipley said troopers had determined there was "no further threat."

"We don't know what we have here," Shipley said Friday night, adding that investigators have yet to look for evidence at the scene. "We do not have an active search under way at this point."

Shipley said police were called to the home in Mount Airy Friday afternoon by a concerned friend who had not heard from them for a few days. The caller reported seeing a body through the window of the split-level home.

A neighbor said a couple lived there with their son and daughter.

The bodies were to be taken to the medical examiner's office in Baltimore for autopsy.

Mount Airy is about 30 miles west of Baltimore.

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