Police have used expired tear gas to disperse protesters of PAT and PTI and media workers here on Sunday.
According to reports, at least seven-eight years old shells are being used which turn more dangerous.
Experts say that normally tear gas shells have potency life of three year.
At least one person was killed and more than 400 wounded in clashes between police and protesters in Islamabad, hospital officials said Sunday, as a fortnight-long political impasse took a violent turn.
The violence, which began late Saturday and continued early Sunday, erupted after around 25,000 people marched from parliament to the prime minister’s house, where some attempted to remove barricades around it with cranes, an AFP reporter at the scene said.
Police responded with tear gas and rubber bullets. (AFP)
