Posted Wednesday, July 18, 2012 --- 11:17 a.m.

MADISON, Wis. (AP) -- Police are investigating a rash of suspicious fires on a northwestern Wisconsin tribal reservation.

Lac Courte Oreilles tribal police issued a statement saying authorities received reports of six fires on Saturday and Sunday. The fires damaged a store's siding, a storage shed, two sweat lodges, tribal pow-wow grounds and a ceremonial ring.

The statement says tribal police contacted the state fire marshal. Tribal police and the Sawyer County Sheriff's Department apprehended a person of interest on Sunday evening but the statement offers no further details.

Raylene Wolf, a tribal police office assistant, says the department won't release any additional information because the investigation is ongoing. A message left at the sheriff's department wasn't immediately returned. State Justice Department spokeswoman Dana Brueck referred questions to tribal police.

Copyright 2012. The Associated Press.