[Skip to 01:15 of first video and 00:35 of second video]A traditional water buffalo fight in northern Vietnam was suspended after an animal attacked and killed its owner, in the first human fatality since the sport resumed after the Vietnam War.The buffalo was killed and samples were taken to determine whether the animal had been given a stimulant to make it more aggressive.Traditional buffalo fighting was halted during the Vietnam War and resumed 27 years ago.Several buffalo have died in the fights that pit the animals against each other, but Saturday's death was the first human fatality since the fights resumed.The buffalo at first chased the owner of the other animal but failed to catch him and then turned on its owner, who died several hours later from multiple wounds.