Kabul, Afghanistan (CNN) -- Insurgent fire killed three Afghan women and wounded three people in southeast Afghanistan on Saturday, military officials said.
The group was traveling in a taxi in Paktika province when it was attacked by insurgents using guns, according to the International Security Assistance Force.
Three women were killed, and two males and one woman wounded, the international alliance said.
The driver of the taxi took the victims to a nearby ISAF base, where they were treated, officials said.
Elsewhere in Afghanistan, a 16-year-old boy was killed when he stepped on an improvised explosive device in the Tanai district of Khowst province, ISAF said, adding that its own soldiers were not involved in the incident.
Improvised explosive device incidents were up 60 percent in 2009 over the previous year, the U.N. Assistance Mission in Afghanistan reported in December.