Gunmen have attacked the Pakistan stock exchange in the city of Karachi and the four assailants were killed along with two security guards and a police officer in the operation to secure the complex, police have said.

The gunmen attacked the stock exchange grounds, in Pakistan’s financial capital, with grenades and guns on Monday morning. The building is in a high-security zone and also houses the head offices of many private banks.
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Rizwan Ahmend, a police officer at the scene, said food supplies were found on the bodies of the gunmen, indicating they may have planned a long siege.
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The attack began when the gunmen threw a grenade and opened fire on a security post outside the building and the four were killed when security forces inside responded, police said.

https://www.theguardian.com/world/2020/jun/29/pakistan-stock-exchange-attacked-by-armed-men

Militants from the Baloch Liberation Army say they were behind the attack.

Ethnic Baloch groups have fought a long-running insurgency for a separate homeland and a greater share of resources in Pakistan's Balochistan province.

https://www.bbc.co.uk/news/world-asia-53217227