A Lone Tree resident was pronounced dead Tuesday from an apparent self-inflicted gunshot wound, according to a Lone Tree Police Department news release.

At approximately 8:15 a.m. Jan. 17, the Douglas County Sheriff’s Office was serving an eviction notice to a resident in the Heritage Hills neighborhood when deputies reportedly heard a single gunshot from inside the residence, according to the release. 

Deputies had thought the residence was vacant, the police department said in the release. 

The Douglas County Sheriff’s Office said via Twitter that the gunshot was heard from the second floor of the residence. 

Deputies reportedly called for backup from the Lone Tree Police Department, and the Douglas County Sheriff’s Office sent a “CodeRED” alert, an electronic emergency notification system that alerts residents of emergencies in their area. 

At 8:51 a.m., the Douglas County Sheriff’s Office said via Twitter that a shelter-in-place order was sent to houses in the Aspen Hills Circle area. At 9:14 a.m., the sheriff’s office said SWAT was en-route to the scene. 

According to the release, SWAT breached the residence at approximately 10:05 a.m., where a male was “found deceased from an apparent self-inflicted gunshot wound.” Nate Jones, the City of Lone Tree’s communications director, said in an email that the individual was living at the address of the residence in Heritage Hills. 

The shelter-in-place was lifted and there is no longer a threat to the public, the police department said in the release.

The Lone Tree Police Department is conducting an investigation into the death.