Punching Amy Winehouse goes out fighting... and comes home injured

The troubled singer was home at a 'respectable' 3.30am this weekend - but that was not before a turbulent few hours of water fights, punching windows, and apparently injuring her hand.

She began the night in high spirits, squirting water with a high-powered jet from her garage at fans gathered outside her Camden, north London, home shortly before 1am.

Frustration: Amy punches the metal grill outside a shop

Mess: What has Amy done to her hands? Bruising from punching the grill? Burn marks?

About half an hour later she fancied a trip to live music bar Stables at Camden's Proud Galleries.

She started running to the club with a mystery pal, telling photographers she was going to take them on a trip round the back streets.

She also told them - bizarrely - their mothers would like her because 'it kept it interesting'.

The 24-year-old's behaviour then became more erratic over the next few hours.

Sprinter: Amy is desperate for a bit of fun at the Camden Stables

Tired out: After her burst of energy Amy needs a sit down

Before she got to the club she slumped down outside a shop, pushing her security guard away.

The star then jumped up to slam her fist into the shop's metal security blind. Amy has come out swinging several times this summer, first punching a fan during a performance at Glastonbury, then grappling with an over-zealous fan outside her London home earlier this month.

Amy eventually got to the Stables but stayed only for about 30 minutes before leaving via the black door.

Disheveled: Amy's battle scars after a typical night out

High-spirits: Amy started the night joking around with fans and photographers

She arrived home in a distraught, tearful state with a black coat over her head and red marks on her face.

Her hands were filthy and one of her fingers was blackened - perhaps a bruise from punching the grill, it was unlikely to be from ink signing autographs for fans.

The latest meltdown follows a revelation from her father, Mitch, who admitted that the singer only writes good songs when her life is going wrong.

'It's a shame - but that's the way she is. Amy can be creative when most other people would be checking into a hospice.

'When she can hardly stand up, she's got her books in front of her, scribbling away.'

He continued: 'As a child Amy was extremely high maintenance. What she really likes is for people to worry bout her.'

The late night out comes only weeks after she was arrested and cautioned following a video, made public in January, where she appears to be smoking crack cocaine.

After reviewing the case the Crown Prosecution Service decided no charges should be brought against her due to lack of evidence.