Former world heavyweight champion Mike Tyson continued to tease boxing fans about a possible return to the ring by posting another training video on Instagram on Monday that ended with the message, "I'm back".

The 53-year-old caught the attention of the boxing world last week when he posted a short video of a workout that showed he possesses plenty of the punching power and speed that allowed him to become the first heavyweight to hold the WBA, WBC and IBF titles. Tyson said then that he was considering a return to the ring for some exhibition bouts to raise money for charity.

The newest video showed Tyson growling through a workout and hitting the pads with the kind of ferocious power that made him one of the sport's most feared punchers. Since Tyson hinted at a return, challengers have been lining up for a shot at the boxer known as "Iron Mike".

Xinhua - Agencies