The death toll from a huge tornado that struck Moore, Oklahoma on Monday, May 20, rose to 51, the state medical examiner's office said, according to Reuters.

Amy Elliott, chief administrative officer of the Oklahoma medical examiner's office, said 51 were confirmed dead, up from 37 fatalities reported earlier.

The powerful tornado, rated the second highest strength level of EF4 and packing winds of up to 200 miles per hour (320 kph), touched down at mid-afternoon and devastated a wide area of the town.