Singapore authorities investigating those involved in sermon by radical Bangladeshi preacher

Singapore authorities are investigating those involved in a sermon by a radical Bangladeshi preacher. The Home Affairs Ministry says Amir Hamza's speech propagated extremist teachings that are dangerous and detrimental to the nation's communal harmony. It says strong action will be taken against those involved, if laws have been breached. Under the Internal Security Act, this includes deportation, prosecution or detention. Aslam Shah with more.