Brad's Kids Held Hostage...By Ange!

The actor’s forced to make a frantic call to the cops

When news broke last week that Brad Pitt has been getting close to indie actress Alia Shawkat, it didn’t take long for his ex-wife Angelina Jolie to react in her trademark vindictive fashion.

“As soon as she heard there was another woman in Brad’s life, Angelina immediately withheld access to their kids,” dishes an insider. “She’s meant to send them over to his place every few days, but instead she hit the roof over the fact that he’s been dating right under her nose and refused to hand them over.”