London, Aug 24 : Amy Winehouse's mother-in-law is calling for the singer's arrest after she was caught snorting cocaine in a video - again.
The 'Rehab' singer star was secretly filmed taking Class A drug in a packed London pub.
Now, Blake Fielder-Civil's mother Georgette Civil has spoken out about the shocking 36-second footage, which was filmed last month during Winehouse's DJ set in a Camden pub.
Georgette's comments come in the week when Winehouse is set for another rehab stint at the Focus 12 Clinic in Bury St Edmunds, Suffolk.
The singer has booked into the clinic just a short drive from the jail where her hubby is being held.
"Prison will do Amy far more good than Rehab," News of the World quoted Georgette, as saying.
"I'm shocked by the video. When I look at Amy I think: 'For Christ's sake, just get a grip of yourself.' Enough is enough.
"As the police know Amy is a drug addict - and she has now been caught twice on film taking illegal drugs - they should arrest her and put her behind bars.
"Rehab clinics are a waste of money, unless you want them to work. Amy doesn't want to give up drugs, so she's got to learn the hard way in prison.
"Police have to act. She is making a mockery of the law. It has got to stop. The price Amy has got to pay is losing her freedom.
"Prison has helped Blake give up drugs and he's doing brilliantly in Edmunds Hill.
"Prison worked for Blake. It's the only thing that can now save Amy," she added.