Pakistan army soldiers patrol in the Pakistani tribal area of Ditta Kheil in North Waziristan where the Pakistan army are fighting against militants and al-Qaida activists along the Afghanistan border (File Photo - March 8, 2011)
Pakistan army soldiers patrol in the Pakistani tribal area of Ditta Kheil in North Waziristan where the Pakistan army are fighting against militants and al-Qaida activists along the Afghanistan border (File Photo - March 8, 2011)

Police in Pakistan say they have arrested an al-Qaida financier who has been on the U.N. Security Council sanction lists for four years.

Abdul Rehman Sindhi was arrested Thursday in the southern port city of Karachi.

Sindhi was placed on the sanctions list for providing "facilitation and financial services to al-Qaida." He is said to have had close ties to al-Qaida founder Osama bin Laden; his successor, Ayman al-Zawahiri; and Saud Memon, a key suspect in the kidnapping and killing of U.S. journalist Daniel Pearl in 2002.

Pakistan has been under international pressure to crack down on Islamist militant groups and launched a renewed operation against them in 2014, when al-Zawahiri announced the formation of a new wing, al-Qaida in the Indian Subcontinent.

The region, stretching across countries including Pakistan, India and Bangladesh, is home to more than 400 million Muslims.