Madera butane honey oil explosion burns 4, police say

FRESNO, Calif. (KFSN) -- Four people are being treated for burns after an explosion in Madera.

The blast blew the wall off the side of a mobile home on Cleveland Avenue near Tulare Street Friday afternoon. Madera police say it was caused by a failed attempt to make a form of hash called butane honey oil.

The four people accused of making the drug were set on fire during the explosion. They were all taken to the hospital, but their exact conditions have not been released.

Police say explosions from this type of operation are becoming extremely common, and they're asking neighbors to report any suspicious activity.