Militants fired two rockets into the eastern city of Jalalabad on Wednesday ahead of a visit by Afghan President Hamid Karzai and Pakistan's prime minister, police said. No casualties were reported.
One rocket landed just outside the airport in Jalalabad at 7 am and the other hit near a courthouse in the city, the capital of Nangarhar province, said Ghaffour Khan, spokesman for the provincial police chief.
The attacks caused no casualties and occurred several hours before Karzai was expected to arrive for a ceremony with Pakistani Prime Minister Shaukat Aziz to open a new road between Jalalabad and the Afghan-Pakistani border town of Torkham, Khan said.
"The enemy fired rockets to sabotage this event, but fortunately there were no casualties or damage," Khan told the agency.
Tight security has been imposed throughout the city, with Afghan and US-led coalition soldiers blocking streets and searching cars, Khan said.
Taliban and allied Al-Qaeda militants have been stepping up attacks across the country, particularly in eastern and southern provinces, in a bid to destabilize Karzai's US-backed government.