KABUL: Afghan President Ashraf Ghani warned Monday that Taliban violence is threatening the country's peace process, as he briefed the international community on Kabul's preparations for peace talks with the militant group.

Afghan authorities and the Taliban are preparing to engage in negotiations aimed at ending the nearly two-decade-old war in the impoverished country.

But violence, which had briefly reduced after a surprise ceasefire offer by the Taliban in May, has again spiked with officials blaming the insurgents for killing hundreds of security personnel and civilians in recent weeks.

Ghani on Monday hosted the first of three online conferences aimed at briefing the global community on the expected peace talks.

"If the Taliban continue fighting, the Afghan peace process will face serious challenges," he told online attendees from several nations.

"Unfortunately, the current level of violence is higher compared to last year," Ghani said, according to a statement issued by his office.

Ghani is hosting two other video conferences later this week.

The United States and Russia along with some international organisations such as the United Nations are joining the video conferences, officials said.

Other countries participating include Pakistan, India, Iran, China, Egypt and Qatar.

Earlier Monday, just hours ahead of the first online meeting, Ghani's spokesman also slammed the Taliban for an uptick in violence.

"There is no obstacle on our side for the peace process, but we see that the Taliban are not serious," Sediq Sediqqi told reporters.

"The government of Afghanistan released a large number of Taliban in order to reduce violence in the country, but the violence has not decreased."