Star Mega Jam organisers Slam Rick Ross with $2m lawsuit .

American rapper Rick Ross has been hit with a lawsuit for almost $2 million for cancelling his performance at the annual Star Mega Jam in Nigeria last year.

Ross, who was set to jet to Nigeria, claimed he had to cancel his appearance following a bout of ill health.

In a suit filed early this month, lawyers for U.K.-based promotional company Zons P.R. alleged Ross was paid a deposit of $87,500 to promote their client, Star Lager Beer, during his trip to Nigeria.

The suit adds that bosses at the company tried to reschedule another show where he could complete his promotional work for the brand but negotiations fell through.

It added that Ross has so far failed to hand back the money.

A statement in the document reads, "In truth and in fact the defendant had no intention of returning said deposit. To date no part of the deposit has been returned."