Mortars and missiles fired from Pakistan on Monday struck a university and civilian homes in north-eastern Afghanistan, killing seven people and wounding at least 85, Afghan officials said.

Pakistan denied the accusation of targeting a university.

The strikes were the first violent incident since Chinese-mediated peace talks between the two sides earlier this month.

Pakistan and Afghanistan had been embroiled in months of deadly fighting that has killed hundreds of people since late February, when Afghanistan launched a cross-border attack on Pakistan in retaliation for Pakistani airstrikes inside Afghanistan. Islamabad had declared it was in open war with Afghanistan.

Pakistan officials dismissed Afghan media reports and official statements about the strikes on the university as “a blatant lie”.

Pakistan accuses Afghanistan of harbouring militants that carry out deadly attacks inside Pakistan, especially the Pakistani Taliban, known as Tehrik-e-Taliban Pakistan or TTP. The group is separate from, but allied with, the Afghan Taliban, which took over Afghanistan in 2021 after the chaotic withdrawal of US-led troops. Kabul denies the charge.

Afghan and Pakistani officials met in Urumqi in western China in early April, and had agreed not to escalate their conflict, China’s government said after mediating the talks.

Monday’s strikes marked the first major attack since the discussions, highlighting the tenuous nature of peace efforts mediated by the international community. Apart from China, other nations involved in mediation at various times include Turkey, Qatar, the United Arab Emirates and Saudi Arabia.

The fighting largely subsided in March, after the two sides declared a temporary truce for the Muslim holiday of Eid al-Fitr. The truce followed a deadly Pakistani airstrike on 17 March on a drug treatment facility in Kabul which Afghanistan said killed more than 400 civilians. Pakistan denied targeting civilian facilities and disputed the death toll.

Sporadic cross-border fighting continued even while delegations from the two sides were attending the talks in Urumqi.

Afghan deputy government spokesperson Hamdullah Fitrat said Monday’s mortar and missile attack struck the city of Asadabad, the capital of Kunar province, and other areas in the province.

The Kunar Information and Culture director, Najibullah Hanafi, said the death toll stood at seven, with 85 people wounded.

Fitrat said the wounded included women, children and students at the Sayed Jamaluddin Afghani University.

Afghanistan’s higher education ministry said about 30 students and professors were injured in the strike on the university.

At a hospital in Asadabad, resident Sahatullah sat beside his nephew, who he said was one of multiple people wounded in one incident.

“He was playing outside, and shelling came and hit over there,” said the 22-year-old labourer, who gave only one name.

Zmarai Kunari, a 40-year-old teacher, said one of his relatives was killed and others were hurt.

“This is my brother. He was wounded in the shelling; he had gone to pick up his uncle,” he said at the hospital.

In a statement, Pakistan’s information ministry said: “Pakistan’s targeting is precise and intelligence-based. No strike has been carried out on Sayed Jamaluddin Afghan University. The claims are frivolous and fake.”

Earlier this month, the UN office for the coordination of humanitarian affairs in Afghanistan said the conflict had displaced 94,000 people overall.

With Associated Press and Agence France-Presse

Guardian Sport won two top prizes at the prestigious Sports Journalists’ Association’s awards evening on Monday.

The Guardian won sports publisher of the year at the SJA British Sports Journalism Awards night while Jonathan Liew was named columnist of the year for the fifth time in eight years, as well as winning bronze in the football journalist of the year category. Suzanne Wrack won bronze in the women’s football journalist of the year and Andy Bull won bronze in the sports feature writer of the year (long form) category.

When explaining their reasons for giving the Guardian the top award, the SJA judges described the Guardian’s coverage as “a selection box of delights, consistently catering for many tastes”.

The Guardian’s head of sport, Will Woodward, said: It’s an exciting time to be working at the Guardian,” while a delighted Liew said: “I wasn’t expecting to win this one, I respect the people on the shortlist so this one means a lot.”

For the first time in the event’s history, the London Palladium was the venue, with Jim White, Reshmin Chowdhury, Bela Shah and Joel Beya sharing host duties.