http://www.reuters.com/article/oddlyEnoughNews/idUSN4I30549520070420?feedType=RSS MIAMI (Reuters) - An explosion set fire to a Miami house being used to grow marijuana hydroponically on Wednesday and the force of the blast sent the occupant flying into the yard, police said. The man, identified by police as Edel Mesa, 40, was badly burned on the chest, arms and legs and was in critical condition at a trauma hospital, investigators said. "The house was pretty much destroyed," said Miami-Dade Police Detective Carlos Maura. Firefighters extinguished the flames and called police, who seized more than 40 marijuana plants from the home, police said. Reuters Pictures Photo Editors Choice: Best pictures from the last 24 hours. View Slideshow Arson investigators were trying to determine the cause of the explosion, but police said the man may have been using propane gas near the high-intensity lamps used to grow the plants indoors. Police said Mesa was not immediately charged with a crime because of his injuries.