Troubled songstress Amy Winehouse displayed yet another round of bizarre behavior while out on the town in London this weekend. After attempting a cat and mouse game with photogs, she punched a metal gate before slipping into a bar, reports London's Daily Mail.

Winehouse headed out of her Camden home, telling paparazzi that "she was going to take them on a trip round the back streets." When the "Rehab" singer reached the bar Stables, she slammed her fist into a metal gated door before heading in.

Amy left the pub after thirty minutes, looking distressed and appearing to have sustained a hand injury. The singer was recently questioned by police about a video in which she appears to be smoking crack. Last month, 24-year-old Winehouse was diagnosed with early emphysema.