MIDDLETOWN, Conn. — Connecticut's governor is heading to the site of a deadly explosion at an unfinished power plant.

Officials said several people are dead and at least 14 injured after the blast in Middletown.

Fire officials said 50 construction workers were purging natural gas lines when the explosion hit. Officials said they don't know what caused the blast or how many people have died.

Dogs are searching for victims in the rubble and crews are sorting through the collapsed building piece-by-piece.

The explosion rattled homes for miles. One woman who lives nearby said she heard a "tremendous boom." Another Middletown resident said he "felt the house shake," and thought a tree had fallen on his home.

Gov. M. Jodi Rell has called out a specialized search and rescue team to help firefighters.

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