Pakistani forces regained control of the base 17 hours after heavily armed gunmen attacked under cover of night late Sunday, destroying two US-made surveillance planes and killing 10 personnel.

"I condemn the attack on the Pakistan military facility in Karachi which has killed many service personnel and injured many more," Hague said.

"I offer my sincere condolences, in particular to the families of those who have lost their lives and to those who have been injured.

"The UK remains committed to standing with Pakistan in the shared fight against violent extremism."

Copyright AFP (Agence France-Presse), 2011