R&B singer Ne-Yo is being sued by his former personal manager - for the second time in five years - for allegedly stiffing him out of royalty payments.

In court papers, exclusively obtained by RadarOnline.com, Munir Mahmud is suing for breach of settlement agreement and accounting, and demanding a trial by jury.

EXCLUSIVE DOCUMENTS: Ne-Yo’s Manager Sues The Singer For Second Time In Five Years [link to docs]

"This is a civil action for breach of settlement agreement which resolved prior action,” Mahmud’s attorney states in the lawsuit documents. “This is the second time Plaintiff has been forced to file suit against Defendants for failing to pay monies expressly due to Plaintiff."