Rivers United arrived in Omdurman, Sudan on Thursday, for the return leg CAF Champions League fixture against Al-Merreikh.

On Friday, they stepped out for the usual evening training at the Omdurman stadium ahead of Sunday clash.

But they were met by angry fans who attacked the Nigerian team.

Rivers United have now announced that they will send a strongly-worded protest to the Confederation of African Football (CAF) over what they called ‘unwarranted’ attack on its players and officials in Omdurman on Friday by fans of Al-Merreikh.

The United contingent was pelted with various objects as they made their way to training at the Al-Merreikh Stadium, Omdurman. One official of Rivers United FC, Ogude Bright was left injured after an object thrown by the irate fans hit him in the face.

“This is unacceptable. We treated them very well when they came to Nigeria for the first leg and there were no complaints.

“We are bitterly disappointed at the attacks directed towards us (on Friday) and the club will write a formal protest letter to Caf over this unwarranted treatment meted out to us.

“Hopefully, Caf will take action," Rivers State Sports Commissioner, Honourable Boma Iyaye, who led the Rivers United contingent to Sudan said.

Rivers United and Al Merreikh will meet on Sunday in a second leg, first round clash of the 2017 Caf Champions League at the Al-Merreikh Stadium, Omdurman.

The Nigerian club won the first leg 3-0 in Port Harcourt last Sunday.