No casualties were reported.
On the border of Nevada and Arizona in the USA there was an explosion and fire at the Hoover Dam. This is reported by ABC News. Images of the incident spread in social networks. They show an explosion in a building at the base of the dam.
Officials say there were no casualties from the explosion and the power system is operating normally. Nearby Boulder City Fire Department officials say the blaze was extinguished by the dam crew before emergency crews arrived.
The cause of the fire is under investigation.