At least 25 people were killed in three attacks in Pakistan on Tuesday, officials said, including 14 who died after a suicide bomber targeted a political rally in the southwestern province of Balochistan.

Dozens of people were wounded in that explosion, which took place in the parking lot of a stadium in the provincial capital, Quetta, where hundreds of members of the Balochistan National Party (BNP) had gathered, two provincial officials said, speaking on condition of anonymity.

At least seven of the wounded were in critical condition, the officials said.

Another attack in Balochistan, near the border with Iran, claimed five lives on Tuesday, while six soldiers were killed after a suicide attack on their base in Khyber Pakhtunkhwa province.

Balochistan is Pakistan's largest and most resource-rich province, but also its poorest, and regularly ranks among the lowest on human development indicator scorecards.

The BNP campaigns on a platform calling for greater rights and economic investment in the wellbeing of members of the Baloch ethnicity.

The party's chief, Akhtar Mengal, had just finished speaking at the Quetta rally and was leaving the venue when the attack occurred. He said he was "safe" in a post on social media.

Pakistani forces have been battling an insurgency in the province for more than a decade, and in 2024 the region saw a sharp rise in violence, with 782 people killed.

Elsewhere in Balochistan on Tuesday, five paramilitary personnel were killed and four wounded when a homemade bomb exploded as their convoy passed through a district near the Iranian border, a senior local official told AFP.

No group immediately claimed responsibility for either attack.

On Tuesday, six soldiers were killed in an attack on a paramilitary headquarters in the Khyber Pakhtunkhwa city of Bannu, the military said.

"A suicide bomber rammed an explosives-laden vehicle into the gate of the FC camp, after which five more suicide attackers entered," a government official told AFP, speaking on condition of anonymity.

The ensuing exchange of fire lasted 12 hours, ending after the six attackers were killed, the official said.

The militant group Ittehad-ul-Mujahideen Pakistan claimed responsibility for that attack. (AFP)