Taliban militants have overrun two district centres in northern and central Afghanistan, as Afghan forces fight to contain a growing insurgency across the country.
Ghor's Taywara district fell to the Taliban early on Sunday after several days of clashes with Afghan security forces, Mohammad Mahdavi, deputy chief of the provincial council for Ghor, told DPA news agency.
The central province of Ghor shares borders with two insecure provinces, Farah in the northwest and Helmand in the south, both of which are known as strongholds for Taliban terrorists, Mahdavi said.
Another district in northwest Faryab province also fell to the Taliban early on Sunday.
"A large number of Taliban [attacked] Kohistan district centre from several directions around 9pm on Saturday," said Javed Bedar, a spokesman for the Faryab governor.
According to Bedar, both security forces and the Taliban suffered casualties, but no exact numbers were immediately available.
The Taliban launched four assaults on Ghor's Taywara police headquarters and "we had no choice but to retreat," provincial police chief Mohammad Mustafa Moseni said.
He said police have taken up positions about 8km from the headquarters while they wait for reinforcements to launch a counterattack.
Taliban spokesman Zabihullah Mujahid confirmed that the militants had captured both Taywara and Kohistan district centres and said the group had killed scores of Afghan security forces and captured of large amount of weapons.
In Faryab's Lawlash district two police officers were killed late on Saturday when Taliban used the cover of darkness to attack and set fire to the police headquarters buildings, Abdul Karim Yourish, the provincial police chief spokesman, said.
There has been a surge in fighting in several northern and southern Afghan provinces in recent days, including in Helmand in the south where 16 Afghan police officers were killed by a US air strike on Friday night.