At least 10 Pakistani security personnel were killed in a militant attack on an outpost near the northwest city of Dera Ismail Khan late on Thursday, Reuters reported citing police sources.

Tehreek-e-Taliban Pakistan (TTP) claimed responsibility for the attack, the group said in a statement.

Two attackers killed five people and wounded 22 others on Wednesday in what Ankara called a terrorist attack at the Turkish Aerospace Industries headquarters, where witnesses said they heard gunfire and an explosion, Reuters reported.

Interior Minister Ali Yerlikaya said both attackers were killed after the attack, adding two of the injured are in critical condition. TV broadcasters showed footage of armed assailants entering the TUSAS building near Ankara.

"Two terrorists were neutralised in the terror attack on the TUSAS Ankara Kahramankazan site," Yerlikaya said.

"Sadly, we have five martyrs and 22 wounded in the attack. Three of the injured were already discharged from hospital, 19 of them under treatment," he said.

Yerlikaya said the perpetrators were "highly likely" members of the outlawed Kurdistan Workers' Party (PKK).

"The style of the act shows that it is highly likely the PKK that carried out the attack. Once identification is completed and other evidence become clearer, we will share more concrete information with you," he said.

Turkish air forces conducted airstrikes in northern Iraq and northern Syria and destroyed 32 PKK targets, the defence ministry said late on Wednesday, adding that many PKK members were killed, read the report.

Prosecutors have launched an investigation, state-run Anadolu Agency reported.

Turkish President Tayyip Erdogan, alongside Russia's Vladimir Putin at a BRICS conference in the Russian city of Kazan, condemned the attack and accepted Putin's condolences. NATO, the United States and the European Union also condemned the attack.

Witnesses told Reuters that employees inside the building had been taken to shelters by the authorities and no one had been permitted to leave for a few hours. They said the blasts they heard may have taken place at different exits as employees were leaving work for the day.

Witnesses later said evacuation of personnel from the TUSAS campus had started and buses were allowed to leave as the operation had ended, Reuters reported.

Broadcasters showed images of a damaged gate and footage of an exchange of gunfire in a parking lot, as well as the two attackers carrying assault rifles and backpacks as they entered the building. Ambulances and helicopters later arrived.

TUSAS is Turkey's largest aerospace manufacturer, currently producing a training craft, combat and civilian helicopters, as well as developing the country's first indigenous fighter jet, KAAN. Owned by the Turkish Armed Forces Foundation and the government, it employs more than 10,000 people.

NATO Secretary General Mark Rutte condemned the attack and said the military alliance would stand with its ally Turkey.

India and China have reached a deal on patrolling their disputed frontier to end a four-year military stand-off, the Indian foreign minister said on Monday, paving the way for improved political and business ties between the Asian giants.

The news came on the eve of Indian Prime Minister Narendra Modi's visit to Russia for an Oct. 22-24 summit of the BRICS regional grouping, during which he could hold talks with Chinese President Xi Jinping, Indian officials said.

Relations between the world's two most populous nations - both nuclear powers - have been strained since clashes between their troops on the largely un-demarcated frontier in the western Himalayas left 20 Indian and four Chinese soldiers dead in 2020, Reuters reported.

The two sides had since stopped patrolling several points along the border in the Ladakh region to avoid new confrontations, while moving tens of thousands of new troops and military equipment closer to the freezing highlands.

"We reached an agreement on patrolling, and with that we have gone back to where the situation was in 2020 and we can say ... the disengagement process with China has been completed," Indian Foreign Minister Subrahmanyam Jaishankar said at a NDTV media conclave.

The "understanding was reached only today," he said, adding: "We always said that if you disturb the peace and tranquility how can the rest of the relationship go forward?"

To avoid clashes, the two militaries will patrol contested points along the border according to an agreed schedule, a senior Indian military officer aware of the details told Reuters.

Both sides will monitor the area in Ladakh to ensure that there are no violations, the officer added.

Authorities in Beijing offered no immediate response to India's remarks.

Officials in New Delhi said the pact clears the path for a likely bilateral meeting between Modi and Xi on the sidelines of the BRICS summit, which will be their first since 2020.