May 8 (UPI) -- Pakistan said its forces killed more than 50 Afghan soldiers along their disputed border, but Afghanistan said two died.
The clashes took place Friday at the Chaman border, which divides Pakistan's southwest Balochistan province and Afghanistan's southern Kandahar. Pakistani officials said they were carrying out a census count.
Originally, Pakistan said 13 people were killed, including nine civilians from its country.
On Sunday, Pakistan increased the number of victims.
"We are not pleased to tell you that five Afghan check posts were completely destroyed -- more than 50 of their soldiers were killed and above 100 were wounded," Maj. Gen. Nadim Ahmad, head of the paramilitary Frontier Corps, said to reporters in Islamabad. "We are not happy for their losses, but we were forced to retaliate."
Also, two Pakistani soldiers were killed and nine more injured in the incident, Ahmad said.
But Afghanistan said the figures were inflated.
Afghan envoy to Pakistan, Omar Zakhilwal, said two Afghan soldiers were killed and seven sustained injuries in the clash. He posted Monday on Twitter: "However, even two lives are too many if our claim for seeking good neighbourly relations is genuine & if we mean well for each other."
"Very false claims by Pakistani Frontier Corp that as many as 50 Afghan soldiers lost their lives in Pak retaliation; totally rejected," Sediq Sediqqi, a government spokesman, said Sunday on Twitter.
A spokesman for the Interior Ministry, which oversees the Afghan border police, said the number was "totally baseless".
The two sides also dispute how the clash began.
According to Pakistan, the fighting began when Afghan troops fired on Pakistani census workers. The Afghan government was notified and given the coordinates of the border villages, where the census workers were going door to door, Pakistan said.
Afghan officials said Pakistani troops fired the first shots.
They said Pakistani census enumerators -- accompanied by soldiers -- strayed across the border.
Afghanistan doesn't recognize the so-called Durand Line, which is 1,375 miles established more than a century ago when the British Empire controlled much of South Asia.
The border has remained closed since Friday and will remain so "until Afghanistan changes its behavior," senior Pakistan army general Amir Riaz told reporters.