Suicide bombers struck the headquarters of Pakistan's civilian paramilitary force, formerly called the Frontier Constabulary, in Peshawar, killing at least three officers and wounding at least two others, police said.

The complex is located on Saddar Road, which is one of the bustling city's busiest routes.

Peshawar is the capital of the northwestern Khyber-Pakhtunkhwa region, which borders Afghanistan.

What do we know about the deadly attack in Peshawar?

The attack occurred at 8:10 a.m. local time (0310 UTC).

One of the bombers carried out an attack at the entrance to the complex, Peshawar police chief Mian Saeed Ahmad was cited by Dawn newspaper as saying.

The other two attackers attempted to enter the headquarters and were gunned down in its parking area, he said.

According to Ahmad, three officers were killed in the attack and two other officers were injured.

Three other people were injured in the incident besides the two officers, according to Reuters news agency.

Dozens of security personnel were on open ground inside complex

Ahmad said about 150 security personnel were on open ground inside the headquarters for morning parade drills when the attack took place.

"The terrorists involved in today's attack were on foot and failed to reach the parade area and a timely response by our forces prevented a much larger tragedy."

Police had completed the clearance operation and authorities had collected samples of the body parts of the attackers for DNA tests, Ahmad added.

Militant attacks in Pakistan

No group has claimed responsibility, but the Pakistani Taliban, also known as Tehreek-e-Taliban Pakistan (TTP), have been linked to similar attacks.

Monday's attack comes less than two weeks after TTP-linked militants carried out a suicide bombing at an Islamabad court.

Attacks by TTP militants have led to an increase in tension between Pakistan and Afghanistan, with Islamabad demanding Kabul rein in the group.

Dozens of people were killed in border clashes between Pakistan and Afghanistan last month. The fighting ended in a Qatar-mediated truce on October 19.

Edited by: Roshni Majumdar