A vandalism investigation is underway at the Whaley House, a museum in San Diego's historic Old Town district, after employees found broken windows Sunday morning.
When employees arrived to open up the museum, they found cracked windows and a white powder spread across the front porch.
"When they closed up yesterday, there was no damage, the facility was just fine," San Diego Fire-Rescue Department (SDFD) Capt. Jeff Gantz said. "Sometime during the night and approximately 8:45 this morning they noticed broken windows and white powder on the porch."
Similar vandalism was found at the historic Marston House in Balboa Park.
Someone fired paint balls at the home on Saturday, and an employee with the museum believes the two attacks are related.
San Diego Police looked for nearby surveillance footage to help determine what happened.
The hazmat team identified the white powder found at the Whaley House as dry chemical extinguisher sprayed on the front entrance.
However, the facility was not missing a fire extinguisher and nearby stores were not missing one either, Gantz said.
This is not the first time the historical home has been vandalized. Police said employees told them the museum has had problems with disgruntled employees and homeless in the area.
SDPD Sgt. Sullivan said the repair cost for the building is unknown.