SAN ANTONIO San Antonio fire officials say a discarded cigarette is to blame for a fire that evacuated four people and damaged a home on the Northeast Side. The fire was called in around 4:30 a.m. in the 100 block of Covina Avenue, not far from Eisenhauer Road and Loop 410. Firefighters said a woman had been smoking before going to sleep and was using a styrofoam cup as an ashtray. Fire officials said it appears the cigarette wasnt out and that it burned through the cup, setting her bed and a couch on fire. The woman told firefighters that the smoke along with the smoke detectors woke her up.