Explosion evacuates businesses

April 21, 2008 6:20:00 PM PDT
Dozens of business owners in Fort Lee, New Jersey, were allowed back into their buildings after an underground explosion Monday. The explosion caused a transformer fire and sent manhole covers flying into the air.

About 55 business owners were forced to leave because of concerns over carbon monoxide levels.

No one was hurt by the explosion.

PSE&G crews are still investigating the cause of the blast.