UPDATED Sunday, May 27, 2012 --- 1:27 p.m.

GLENDALE, Wis. (AP) -- A man and woman are hospitalized after a house they were in exploded in the Milwaukee suburb of Glendale, causing fire damage at several nearby houses and injuring several others who helped at the scene.

The Milwaukee Journal Sentinel reports Sunday that investigators don't yet know what caused the Saturday blast. The two people, both inside the house, have not been identified but are described as father and daughter. The home's owner is an 88-year-old man.

A spokeswoman for Columbia St. Mary's says the man is in serious condition and the woman asked her condition not be released.

A neighbor, a passer-by and two other people suffered injuries while helping the victims get out. Two police officers were treated for smoke inhalation and a fire fighter for heat exhaustion.

Copyright 2012 The Associated Press

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Posted: Saturday, May 26, 2012 --- 8:53p.m.

Information from WITI in Milwaukee:

Two people were hurt after an explosion and then fire destroyed a home in Glendale Saturday evening.

Multiple emergency crew s from the North Shore Fire Department were called to the scene on Hampton Ave. just east of Port Washington Rd.

A neighbor tells FOX6 News there was an explosion around 6:15 p.m. He said the force knocked him off his chair in his home near Hampton Ave.

Officials tell FOX6 News, a man in his 80s and his daughter were inside the home at the time of the explosion. Both were taken to St. Mary’s Hospital for treatment. There’s no word on their condition at this hour.

Two other homes were scorched by flames from the fire. Six other homes near the explosion site had to be evacuated.