ISLAMABAD (Reuters) - Pakistan said on Saturday it had refused to allow Indian President Ram Nathan Covind's plane to cross its airspace, unusually because of the recent "behavior" of New Delhi.

The decision comes at the height of tensions associated with Kashmir between the two nuclear-armed neighbors.

"The decision was taken because of India's behavior," Foreign Minister Shah Mehmood Qureshi said in a statement.

"The Indian president has sought permission to use Pakistani airspace to fly to Iceland, but we have decided not to allow him," Qureshi said, without giving further details.

Pakistan closed its airspace to Indian shipping after an air clash in February between the two countries. It reopened its airspace to all civil flights in July, ending months of restrictions on important routes in international air traffic.