Rapper Future has hit out at his ex Ciara, accusing her of having "control problems" and stopping him from seeing their son.

Singer Ciara has little boy Future, 19 months, with her former lover, who she was engaged to between October 2013 and August 2014. But it seems things are frosty between the pair, after Future took to Twitter to criticise the way she is handling their childcare arrangements.

"This b**ch got control problems..." he fumed on his account. "I gotta go through lawyers to see babyfuture...the f**kery for 15k a month

"I jus want babyfuture that's all.

"I been silent for a year & a half..I ran outta patience. (sic)"

The star finished his rant by adding he would "handle his business and focus on making music" while spending time with "real" loved ones. He also took to Instagram to post a picture of himself, captioning the shot: "Everyone need somebody to point they finger at & say that's da bad guy...Future Montana. (sic)"

While Future is clearly happy to vent online, Ciara has so far stayed silent about the matter. She's found new love with American football player Russell Wilson and is focusing on the future.

“I definitely (want more kids), yes. (Russell and I) discuss a lot of things … a lot of good things!” she previously told People magazine. “He is just an amazing guy. Honestly, him being in my life is really sweet … Life is pretty good, I can say that.”