PESHAWAR, Pakistan — Northwestern Pakistan was struck by two militant attacks hours apart on Friday that left at least 13 people dead.

Gunmen wearing suicide vests stormed a Christian neighborhood in the city of Peshawar, killing one civilian. A suicide bomber struck a district court in the town of Mardan, killing 12 people and wounding 54 others.

A breakaway Taliban group claimed responsibility for both attacks.

Pakistani Prime Minister Nawaz Sharif issued statements condemning the violence, saying ‘‘these cowardly attacks cannot shatter our unflinching resolve in our war against terrorism.’’ UN Secretary General Ban Ki-moon also denounced the attacks.

In the Peshawar assault, militants stormed the Christian neighborhood early in the morning, triggering a shootout in which four attackers were killed and one Christian died. Five security officials and guards were wounded.

Army Lieutenant General Asim Saleem Bajwa said the attack was quickly repulsed.

In Mardan, 25 miles from Peshawar, a suicide bomber threw a grenade at the district court before detonating his explosives.

ASSOCIATED PRESS