Afghan security forces attacked a group of suspected Taliban rebels after 
they crossed the border from neighboring Pakistan, killing at least 15 of them, 
an army commander said Wednesday. 
Among the dead was a midlevel Taliban commander, Mullah Shien, who for months 
has allegedly led several cross-border raids from secret bases on the Pakistani 
side of the border, said Abdul Razak, the frontier security commander. Shien's 
followers would regularly attack foreign and Afghan troops and bomb trucks 
hauling gasoline for the U.S.-led coalition, he said.
"We got a tip-off about them coming across the border. We went down there and 
fought them," Razak said. "We now have all the dead bodies."
Four insurgents fled back across the Pakistani border after the two-hour 
gunbattle late Tuesday near the border town of Spin Boldak in Kandahar province, 
Razak said.
The fighting was the deadliest in weeks in Afghanistan and may further 
inflame a dispute between Kabul and Islamabad about militants sneaking back and 
forth across the two countries' 1,470-mile border, most of which is unmarked and 
unguarded.
Pakistani officials were not immediately available to comment.
Afghanistan has long demanded that Pakistan do more to crack down on 
militants based on its side. Islamabad has repeatedly said it's doing all it 
can, pointing to the 80,000 Pakistani troops in the region.
Earlier this month, Pakistani officials claimed that insurgents were in fact 
moving in the other direction, joining tribal fighting in Pakistan's North 
Waziristan region.
Violence on both sides of the largely mountainous frontier, where Osama bin 
Laden is suspected to be hiding, has spiked and much of it has been blamed on 
the Taliban. The fighting has become a concern for the United States, which 
maintains about 22,000 troops in Afghanistan more than four years after the 
Taliban was driven from power.
President Bush and two top US commanders raised the issue in visits to 
Islamabad this month.