Marc Anthony & Jennifer Lopez in custody battle over twins?

Marc Anthony is reportedly set to challenge Jennifer Lopez for custody of their twins.

The former couple who split in July after seven years of marriage had agreed an amicable arrangement where the American Idol judge was primary carer of three-year-old Max and Emme, but the Latin singer is now said to be seeking joint custody.

Sources claim Marc “hit the roof” when he saw pictures of Jennifer’s new boyfriend Casper Smart bonding with the youngsters.

“It caused a huge blow-up. “[Now he is] going back on his word and saying his wants joint custody,” said the source.

Those close to the situation insist Marc’s motivation to take action is to make the On the Floor hitmaker “suffer” because he is angry she has found love again.

“He wants to make Jennifer suffer because she’s having fun with someone new, and he knows this will hurt her on the deepest level,” said the source.

However, the singer-and-actress is not prepared to give in to her estranged spouse and is ready to fight him to keep the custody arrangements as they are.