The woman who took part in the ISIS-inspired San Bernardino massacre is linked to her native country’s most notorious radical mosque, American officials believe.

Sources have told Daily Mail Online that US officials handed over information to their Pakistani counterparts about links between Tashfeen Malik and the Red Mosque in Islamabad.

The mosque is infamous for its links to violence and authorities in Pakistan are now considering taking action against its preacher, Maulana Abdul Aziz, after the disclosures by US officials.

It is unclear currently how law enforcement and intelligence agencies in the US have connected Malik to the mosque.