The governor of Sinaloa state, Mario Lopez Valdez, said he believed the killings were "a message between rival drug gangs".

BBC: Mexico police find 17 burned bodies in two vehicles

"An operation is under way to ensure that calm and security return to the Guasave area, " state governor Mario Lopez Valdez said.

BBC: Mexico drug violence: Sinaloa shootout leaves 12 dead

Sinaloa Governor Mario Lopez Valdez has not commented yet on the arrest.

BBC: Shorty Guzman's 'security chief' arrested in Mexico

"It's a horrific scene, " California Highway Patrol spokesman Mario Lopez said.

CNN: Death toll expected to rise in California tour bus crash

The cause of the crash is not yet clear, but California Highway Patrol spokesman Mario Lopez was quoted by the Associated Press as saying that the bus driver reported brake problems as he descended a road leading from the Big Bear ski resort area.

BBC: California bus crash kills eight and injures dozens

Mario Torres Lopez, 42, was working at a depth of about 100m (328ft) when the mine collapsed.

BBC: Chile slow search for miner trapped 100m underground