AFP, TUNIS: After a riot sparked by a contested penalty and a flurry of red cards left 19 police officers hospitalised, Etoile Sahel said Sunday they were ready to go to court over their 3-2 defeat by bitter rivals Esperance.

Thirty-eight police officers were injured when they were pelted by smoke bombs, stones, chairs and pieces of metal at Thursday's Tunisian league match in Rades, on the outskirts of Tunis.

The local football authorities also suspended the match referee Karim Khemiri until the end of the season, citing serious mistakes.

Etoile said on their website they "suspect match fixing in the match against Esperance", and will be handing a dossier of information to government officials.

The penalty award came late in the second half with Etoile leading 2-1 and there were three red cards in the final 10 minutes.