Thursday: 8:56 p.m., 1909 31st Avenue SW, carbon monoxide.

Thursday: 10:01 p.m., 500 W University Avenue, false alarm.

Friday: 9:32 a.m., 1405 Railway Avenue, structure fire.

Friday: 5:59 p.m., 2031 33rd Street NW, sprinkler activation.

Saturday: 6:28 a.m, 2031 33rd Street NW, false alarm.

Saturday: 12:57 p.m., 1501 S Main Street, carbon monoxide.