The Olympus Care Center will stay closed at least until Wednesday evening while county fire department and sheriff's investigators continue their probe into a series of arson fires at the residence home.

Investigators have eliminated any residents from their list of possible suspects in the fires and have administered at least one polygraph examination to a care center staffer, said county fire marshal Capt. Max Berry.He said Olympus will stay closed until the investigation is finished, he said.

"We didn't want to put the patients back in harm's way if there were a dangerous staff person there," he said. "If (the investigation) takes longer, we're not hesitant to keep it closed indefinitely."