Two other people were also killed, the military said.
Five persons including a police officer and security guards were martyred and many others including a police officer were injured. Special police forces deployed to the scene of the attack and in a swift operation secured the building, killing all four gunmen. Security sources said the terrorists were armed with sophisticated weapons and had explosives-laden jackets. Before that they lobbed grenades and started shooting.
"Four attackers have been killed", he said. They launched the attack by opening fire at the entrance of the Pakistan Stock Exchange in the southern port city, the country's financial center. Have instructed the IG & security agencies to ensure that the perpetrators are caught alive and their handlers are accorded exemplary punishments.
"It is easy to condemn today's attack, but we must also talk about social and economic exploitation in Balochistan", Nayyar told DW.
It also said to issue a "detailed statement in due course".
In a statement, he said members of the law enforcement agencies courageously took on the terrorists and foiled their bid.
Security personnel examine confiscated ammunition from attackers outside the Stock Exchange Building
"India rejects absurd comments of Pakistan foreign minister on the terrorist attack in Karachi", PTI quoted MEA spokesperson Anurag Srivastava as saying.
Gunmen have attacked the Pakistan Stock Exchange in the country's largest city of Karachi, the country's financial centre. "I have extended my heartfelt condolences to the families of the martyrs and pray for the recovery of the injured".
Speaking to Geo TV, Karachi's inspector general said the situation was under control and all the attackers were dead.
"An unfortunate incident took place at the Pakistan Stock Exchange". He added that trading had not stopped and was still continuing.
The account was suspended a short time after the attack.
"There is no doubt that this was a terrorist attack". Its main KSE-100 index dropped 220 points but it later recovered and was 200 points higher at 0830 GMT.