By Mirwais Harooni
KABUL (Reuters) - A powerful explosion shook houses in the diplomatic quarter of Kabul on Tuesday, but there were no casualties in the second such incident in the Afghan capital in a single day, officials said.
Kabul has suffered a growing number of bombings by the Taliban and other jihadist militants as foreign combat troops withdraw from a 13-year-long war, leaving behind a smaller support mission.
Police spokesman Hashmat Stanekzai said it was unclear what caused the blast in the Wazir Akbar Khan area of the city, which is home to embassies, international media offices and aid organisations, but there were no casualties.
In an earlier incident on Tuesday, seven Afghan soldiers were wounded when the bus they were riding in was targeted by a remote-controlled bomb on the outskirts of the capital, said Zahir Azimi, a spokesman for the Afghan defence ministry.
In an email to journalists, the Taliban insurgency claimed responsibility for that attack.
A day earlier, a magnetic bomb killed two U.S. troops in the city.
(Reporting by Mirwais Harooni Writing by Kay Johnson; Editing by Clarence Fernandez)
