A shutter-down strike is being observed across Balochistan on Tuesday in response to a call made by the Baloch National Partyront (BNP) against killing of BNP activist and arrests. Other nationalist parties also supported the strike call. Business activities came to a standstill, with most of the shopping and trading centres remaining close. Strict security measures have been taken in Quetta and heavy police contingents of police and FC have been deployed at key roads and shopping centers.