The Balochistan Liberation Army (BLA), which also describes itself as the Baloch Liberation Army, claimed responsibility for the attack.
"Fidayeen" is an Arabic term that loosely translates as "one who sacrifices himself".
CNN does not have independent confirmation of the group's involvement. -AFP Security personnel stand next to burned out vehicles in front of the Chinese consulate in Karachi. The hospital later said at a news briefing the attack was over.
Pakistani Prime Minister Imran Khan ordered an inquiry into the attack, calling it a "conspiracy" against the strategic cooperation between China and Pakistan.
China is a longtime ally and has invested heavily in transport projects in Pakistan.
As the Karachi attack unfolded, the sounds of the explosion and gunfire rang out in the affluent Clifton neighbourhood, where the consulate is located.
Gunman at Mercy Hospital shot himself, was also shot by police
Many in the medical community took to social media to share their sentiments over the tragic loss of the 38-year-old ER physician. Officers weren't assigned to the particular call, "but they went because that's what we do", Johnson told reporters.
"We highly appreciate the efforts of the Pakistani side", he said when asked about Pakistan's response to the attack.
"Two attackers have entered the visa section of the consulate, diplomats are safe", a senior police officer told Reuters on condition of anonymity.
Schools in the area were placed on lockdown.
Up to four gunmen tried to enter the consulate but were stopped by security guards at a checkpoint, reports said.
She ensured the terrorists, armed with nine hand-grenades, assault rifles, magazines and explosives, did not reach the diplomatic staff inside the consulate building.
Pakistan Foreign Minister Shah Mahmood Qureshi announced all 21 Chinese staff had been confirmed safe and moved to a safer location. Those who want to prevent peace in this country were brilliantly stalled by the young security officers of this country.
But, Rana said, both China and Pakistan have calculated the security risks, which include the threats from the Baluch separatist.
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"This was an attempt to sabotage our relations with China".
He added that he hoped to speak to his Chinese counterpart "soon"'.
India denies helping the Balochistan insurgents, and was quick to condemn the violence.
Balochistan, which is on the borders of Afghanistan and Iran, has rich mineral and natural gas reserves, but is Pakistan's poorest province.
The insurgents are based in the southwestern province of Baluchistan, where Chinese money has funded development of a deep-water port in the city of Gwadar.
"China is exploiting our resources", the group's leader told Reuters.
Human rights groups accuse the security officials of crushing dissent and security officials of extrajudicial killings and enforced disappearances. The organization was banned in Pakistan in 2009 under anti-terrorism laws.
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