A suicide attacker detonated explosives outside a stadium in southwestern Pakistan on Tuesday night, killing at least 13 people and wounding 30 others as supporters left a political rally, police and hospital officials confirmed Wednesday.

The blast struck near a graveyard on the outskirts of Quetta, capital of Balochistan province. Local police chief Majeed Qaisrani said investigators recovered body parts of the bomber from the scene.

Waseem Baig, a spokesman for a government hospital, said 13 bodies and dozens of injured were brought in, with several victims in critical condition.

The rally had been organized to mark the anniversary of Sardar Ataullah Mengal, a veteran nationalist leader and former provincial chief minister. Akhtar Mengal, head of the Balochistan National Party and a vocal critic of the government, was unharmed in the attack, though police said some of his supporters were among the dead and wounded.

“This cowardly act of the enemies of humanity will not break our resolve,” Balochistan Chief Minister Sarfraz Bugti said, condemning the bombing and ordering urgent medical care for survivors along with a high-level investigation.

In Islamabad, Interior Minister Mohsin Naqvi also denounced the attack, accusing “India-backed terrorists and their facilitators” of seeking to destabilize the country. He offered no evidence for the claim. India has repeatedly rejected such allegations.

Balochistan has long faced a separatist insurgency led by groups such as the Balochistan Liberation Army, which demand independence from the central government. While authorities say the unrest has been largely subdued, violence continues. Last month, gunmen killed nine people after seizing two passenger buses traveling from Quetta to Punjab. Most such attacks have been claimed by the BLA.

The bombing came amid a wider surge in militancy across Pakistan. On Wednesday, gunmen killed five Sunni Muslims in Kurram, a district in northwestern Khyber Pakhtunkhwa province. A day earlier, militants stormed the headquarters of the paramilitary Federal Constabulary in Bannu, sparking a gunbattle that left six soldiers and five attackers dead.