PITTSBURGH -- City police, federal Drug Enforcement Administration officials and hazardous materials crews roped off a section of Pittsburgh's Lawrenceville/Stanton Heights area overnight, concerned that a local home would blow at any minute.

Authorities said the house, located near 56th and Camelia streets, may be a methamphetamine laboratory.

Police said they responded to the home on Monday night after a man in the backyard was found bleeding.

Investigators haven't said what's inside the home. They were still bringing out boxes of evidence early Tuesday morning, WTAE Channel 4's Gus Rosendale reported.

The woman who owns the house told WTAE Channel 4 Action News that she denies any involvement with drugs.

No arrests have been made. Pittsburgh police said the case has been turned over to the DEA.