Deadly Pakistan market bomb against 'some of the poorest people'

A deadly bomb blast has struck a busy market on the outskirts of Pakistan's capital, Islamabad, killing at least 20 people, police and medics say.

The high intensity blast at the fruit and vegetable market left as many as 100 injured, reports say.

The Pakistani Taliban denied involvement. No other group has said it carried out the attack.

Mike Wooldridge reports.