This is the shocking moment a defender punched a goalkeeper during a football match in Thailand.

Kittisak Moosawat from Lampang FC had gone up for a corner in the dying moments with the score at 3-4 when Artit Promkun from Phrae United tried to stop him running back by grabbing his shorts and then whacking him in the head.

Footage shows the chaotic scenes from the game as Artit in a yellow jersey and Kittisak in a maroon shirt fell to the ground at the Lampang Stadium on August 17 during the League 2 game.

Spectator Munin Khamkhuen, who watched the game, said: 'The referee saw this, whistled for a foul, and gave the Phrae team a red card. After this, the referee gave Lampang a penalty, but Phrae was unhappy with the decision, so they walked out of the field for quite some time. The live broadcast didn't show the walkout.

'After Phrae walked out, the referee reversed the decision to cancel the penalty and let the game continue as usual. Lampang was unhappy that the referee changed the decision, so they also walked out.'

After an hour-long protest, the match concluded in the 154th minute, with Phrae United winning 3-4. On match day two of the league, Phrae United moved up to fourth place, while Lampang FC dropped to thirteenth.

However, Nualphan Lamsam, president of the Football Association of Thailand, ordered an investigation.