Guy Ritchie 'worried' about children

Guy Ritchie is reportedly worried that Madonna will break their custody agreement, according to Closer.

The director's father claimed that Ritchie fears his ex-wife could refuse to return their children from the US.

John Ritchie said: "The children are with Madonna at the moment. Our worry is that she won't send them back and Guy hopes she won't keep them."

Ritchie and Madonna finalised their divorce earlier this month and agreed to share custody of their children.

Eight-year-old Rocco and adopted son David, three, will split their time between living in the US with Madonna and the UK with Ritchie. Lourdes, Madonna's daughter from a previous relationship, will remain in the US.