Topeka ? Police in Topeka say natural gas is suspected as the cause of an explosion that leveled a home in the southwestern part of the city.

The Topeka Capital-Journal reports that a woman who lives in the home was taken to a hospital after the blast around 11:30 a.m. Monday. The extent of her injuries wasn’t immediately known, but police said she was conscious and alert.

Police say the blast apparently occurred after a crew installing a sprinkler system nearby hit a gas line. The explosion blew out a window of a home across the street and shook the neighborhood.

The smell of natural gas lingered in the area for a few hours, and firefighters were still battling flames more than 90 minutes after the blast.