A woman died and her husband was seriously injured when a house exploded Tuesday morning in the southern Dakota County community of Hampton, authorities confirmed.

Calls came into the Dakota County Sheriff's Office about 6:15 a.m. with several people as far away as Hastings and Farmington reporting that they heard a loud boom. A cloud of smoke was seen rising over the tree line on the 24700 block of Lewiston Boulevard, a supervisor for the Dakota County Sheriff's Office dispatch center said.

Deputies arrived to find a house leveled and a man with severe burns over much of his body wandering the scene looking for his wife, according to Dakota County Sheriff Tim Leslie.

Terry Snoeyenbos, 56, was killed in the explosion, according to the Hennepin County medical examiner's office. Her husband, Brian Suilmann, was in critical condition at Regions Hospital with severe burns.

Authorities say the couple were the only people inside the residence at the time of the explosion. Investigators have not said what might have caused it.

The Randolph-Hampton Fire District and the Sheriff's Office responded to the scene just south of the interchange of Hwy. 52 and Hwy. 50 southeast of the Twin Cities.

Staff writer Liz Sawyer contributed to this report.