KABUL, Afghanistan (AP) — A suicide bomber detonated an explosives-laden vehicle near a police special forces base in eastern Afghanistan Tuesday, setting off a gunfight with police followed by a second suicide bombing, a coordinated attack that killed three people, Afghan officials said. Four militants were also killed.

Habib Shah Ansari, provincial health director in Khost said that so far three bodies and around 30 wounded, both military and civilian, were brought to hospital.

The attack in Khost province comes as the Afghan government continues to fight Taliban militants even as peace talks in Qatar between the two sides take place. It also comes as the U.N. released a report showing a decrease in civilian casualties in the country compared to last year.

There was no immediate claim of responsibility for Tuesday's attack.

Interior Ministry spokesman Tariq Arian said that earlier Tuesday morning a vehicle full of explosives detonated near a base belonging to police special forces.

He added that so far at least four attackers were killed and Afghan forces were fighting two others who were still resisting forces. Arian said that the gun battle underway between the attackers and the Afghan forces may increase casualties.

Separately, in the capital Kabul Tuesday three people were killed when a bomb attached to a vehicle exploded, said Ferdaws Faramarz, spokesman for the Kabul police chief.

Faramarz added that ten other people were wounded in the attack. No one immediately claimed responsibility for the Kabul attack, but both Taliban and Islamic State affiliates are active and have claimed previous attacks in the city.

The violence comes as the U.N. mission in Afghanistan, known as UNAMA, released its third quarter report showing a 30% decrease in civilian casualties compared to the same period last year.

While noting that “the conflict in Afghanistan remains one of the deadliest in the world for civilians,” the U.N. said the first nine months of this year produced the lowest number of civilian casualties since 2012.

The report documented 5,939 civilian casualties, including 2,117 people killed and 3,822 wounded, from Jan. 1 to Sept. 30. The reduction is mainly due to fewer civilian casualties from suicide attacks by insurgents and from a steep drop in airstrikes by international military forces since March 2020, resulting in significantly fewer civilian casualties attributed to the Taliban.

The report said that in the period from Sept. 12 — the start of the Afghanistan peace negotiations between the government and the Taliban in Qatar — to Sept. 30, there was no reduction in the documented number of civilian casualties caused by parties involved in the talks in comparison to previous weeks.

“The peace talks will need some time to help deliver peace. But all parties can immediately prioritize discussions and take urgent, and frankly overdue, additional steps to stem the terrible harm to civilians,” said Deborah Lyons, the Secretary-General’s Special Representative for Afghanistan.

The report said that more than four out of every 10 civilian casualties were children or women.

The U.N. said that insurgents remain responsible for the majority of civilian casualties. The overall number of civilian casualties attributed to the Taliban dropped by 32%, mainly due to a reduction in the number of civilians injured by suicide attacks and ground engagements.

Afghan security forces were responsible for 23% of all civilian casualties. A similar number was recorded in the first nine months of 2019.

The developments come amid an uptick in violence. Afghanistan claimed Sunday it killed a top al-Qaida propagandist on an FBI most-wanted list during an operation in the country’s east, showing the militant group’s continued presence there as U.S. forces work to withdraw from America’s longest-running war amid continued bloodshed.

The reported death of Husam Abd al-Rauf, also known by the nom de guerre Abu Muhsin al-Masri, follows weeks of violence, including a suicide bombing by the Islamic State group Saturday at an education center near Kabul that killed 24 people.