Afghanistan is warning that already fragile ties with Pakistan are being further strained by Pakistan's shelling across the two countries' mountainous border.

Afghan Foreign Minister Zalmai Rassoul told the United Nations Security Council Thursday that his country wants an “immediate and complete end” to the shelling. He said the attacks have taken the lives of dozens of Afghans and have left many other civilians wounded.

Pakistan has repeatedly accused Afghanistan of giving safe haven to militants on the Afghan side of the border, leaving Pakistan vulnerable to counterattacks when it chases the militants out.

Meanwhile, the U.N. special envoy to Afghanistan, Jan Kubis, told the Security Council there have been reports of uprisings against the Taliban in various areas of the country.

He said the new development requires “greater analysis” because the reasons for the new violence are “complex.”

Kubis said the localized conflicts “appear to be resistance to the Taliban,” but not necessarily in support of a greater government presence.

The special envoy said the local communities' desire for “security and justice” have led them to taking “the situation into their own hands.” Kubis said there is a risk of “even greater fragmentation of the security environment.”