South Korea's Cha Dong-min took gold in the men's +80kg taekwondo, but former champion Angel Valodia Matos was banned for life for attacking the referee.

Cha beat Greece's Alexandros Nikolaidis in the final, but the biggest drama of the day came with Matos' response after being disqualified against Kazakhstan's Chilmanov.

Matos was leading 3-2, when he fell to the mat after being hit by his opponent. Fighters have a maximum of one minute's break for injury, and the referee removed him from the competition as soon as the time elapsed.

Matos pushed and kicked the referee, drawing blood from the mouth, then attacked the Swedish judge before spitting on the floor while being escorted out of the arena.

Both Matos and coach have been handed a lifetime ban from all World Taekwando Federation Championships.

The closing ceremony for the Beijing Olympics will be held tonight.

Meanwhile, China lead the medal tally with 49 gold, 19 silver and 28 bronze, second is USA with 34 gold, 37 silver and 36 bronze, and Russia is third on 21 gold, 21 silver and 27 bronze.