Tornado goes on rampage through Oklahoma

Authorities say at least five homes and a barn owned by local authorities were destroyed on Monday and other structures have been damaged by a large tornado in the US state of Oklahoma.
No injuries were reported in the storm which hit the town of Hammond, according to the Oklahoma Department of Emergency Management.
Besides the five homes that were destroyed, the roofs of several other houses were blown off, and power lines were down throughout the area.
The barn - a large metal building - housed some vehicles and other equipment that belonged to Roger Mills County.
A television storm spotter reported seeing the tornado about 5:15 p.m. (2315 GMT) near Elk City, which is about 110 miles (177 kilometres) west of Oklahoma City, according to the National Weather Service.
The tornado was on the ground at least 15 minutes, travelling across open countryside before reaching Hammon, about 15 miles (24 kilometres) to the north.
The tornado was part of a large weather system tracking through the Plains.
The US National Weather Service said an average of four tornadoes are reported in March in Oklahoma, but Monday's tornado was larger than what is typically seen this time of year.
There was no immediate confirmation of additional tornadoes.