Fire officials in the Atlanta suburb of Marietta are investigating three blazes at nearby businesses.
CBS Atlanta reports that AquaRama Pools and Spas was damaged by one blaze. Authorities said a beauty salon was also heavily damaged by another fire.
Marietta fire Commander Steve Ingram tells The Atlanta Journal-Constitution that concrete blocks had been thrown through windows of both businesses.
Authorities say those fires broke out around 1 a.m. Monday in the 500 block of Powder Springs Street. Fire officials say they were still at the scene when another fire broke out around 4 a.m. at an auto repair shop about a block away.
It was not immediately clear whether the fires were related, or what caused them.
Marietta is about 20 miles northwest of Atlanta.