The United States on Wednesday designated a leader of the Pakistan-based Haqqani network as a terrorist, dpa reported.
The blacklisting freezes any assets belonging to Badruddin Haqqani that are under US jurisdiction and bans US citizens from doing business with him, the State Department said.
Badruddin Haqqani is the son of the founder of the network believed to have close ties to al-Qaeda and to have been behind many deadly attacks in Pakistan and Afghanistan.
He now joins his father, Jalaluddin Haqqani, and other siblings on the blacklist.
State Department spokesman Mark Toner said the move was in line with a UN body that had also designated Badruddin Haqqani.
US officials suspected Pakistan's Inter-Services Intelligence, or ISI, has ties to the network.
That notion was revived following the killing of al-Qaeda leader Osama bin Laden in Pakistan May 2. US officials have urged the Pakistanis to determine whether bin Laden was hiding at the compound in Abbottabad with help from circles within the Pakistani government.