KABUL, Afghanistan (AP) — A bomb attached to the vehicle of a former presenter on Afghanistan’s TOLO TV exploded early Saturday, killing the journalist and two other civilians, Kabul police said.

The death of Yama Siawash is being investigated, said police spokesman Ferdaws Faramarz. No one has immediately claimed responsibility.

Siawash had recently begun working with Afghanistan's Central Bank and was in a bank vehicle along with another senior employee, Ahmadullah Anas and the driver, Mohammad Amin. All died in the explosion, said Faramarz.

Violence and chaos have increased in Afghanistan in recent months with an attack last week on Kabul University that killed 22 people, many of them students. The Islamic State affiliate claimed that attack as well as another assault on an educational institution on Oct. 24, also in the capital, that killed 24 people.

The surge in violent attacks comes even as government negotiators and the Taliban are meeting in Qatar to find an end to decades of relentless war in Afghanistan. The two sides have made little progress.

Washington's peace envoy for Afghanistan, Zalmay Khalilzad, has been pressing for an agreement on a reduction in violence or a cease fire, which the Taliban have refused, saying a permanent cease fire would be part of the negotiations.

The talks were part of a negotiated agreement between the United States and the Taliban to allow U.S. and NATO troops withdraw from Afghanistan, ending 19 years of military engagement.

According to initial reports, Siawash was near his home when the bomb attached to his car exploded. An eyewitness, Mohammad Rafi, said Siawash's father and brother were the first to reach the vehicle that was engulfed in flames.

Rafi said all three of those killed were inside the car.

Siawash was a former TV presenter who anchored political programs on TOLO TV.