Salt Lake area firefighters have responded to eight house, nursing home, or apartment fires since Tuesday.

Tuesday, May 14: Salt Lake County firefighters responded at 1:30 p.m. to Olympus Care Center, 950 E. 3300 South, and doused an intentionally set fire in the laundry room. Three hours later, a mattress fire broke out in the same building. Sixty-three residents and 15 staff members were evacuated.Wednesday, May 15: County firefighters again doused an arsonist's fire in a closet at Olympus Care Center about 4:30 a.m. Utah Transit Authority buses ferried patients and staff to the Salt Lake County Senior Citizens center, 2100 S. State. Homicide detectives arrested a suspect in the fires.

Thursday, May 16: Despite the arrest, firefighters returned to battle another closet fire at Olympus Care Center in the early morning. The county fire marshal ordered the center closed and relocated patients and staff to other area nursing homes.

Friday, May 17: About 280 people, most of them senior citizens, were forced into the night when fires broke out at Wasatch Manor apartment building, 535 S. 200 East, and Council Crest Apartments, 706 E. 300 South. The first fire erupted at 12:09 a.m., the next at 2 a.m. Both fires started in the basements of the apartment buildings. The blazes drained Salt Lake Fire Department stations of all their personnel and equipment for the night. No injuries were reported. Investigators have not yet determined if the fires were related to the four at Olympus.

Saturday, May 18: Two house fires erupted in West Valley City.