According to San Bernardino shooting updates, the husband and wife couple were radicalized before their marriage and had borrowed money from an online peer loan group.

"They were actually radicalized before they started courting or dating each other online, and online as early as the end of 2013, they were talking to each other about jihad and martyrdom before they became engaged and then married and lived together in the United States," FBI Director James Comey was quoted as saying at a Senate oversight hearing, reported CNN.

"We also believe they were inspired by foreign terrorist organizations," he added. "We're working very hard to understand exactly their association and the source of their inspiration."

A Reuters source said that San Francisco-based online lender, Prosper, had offered a loan of $28,500 collateral-free loan in November. Investigators say that this is a common practice among suicide bombers - to take all the money available in an account or take out loans on maximum credit. U.S. officials, however, said that there was no link to foreign funds.

Syed Rizwan Farook (28) married and his wife Tashfeen Malik reportedly attended target practice in the LA area before shooting 14 people and wounding 20 others.

A report by the Irish Times said the armed couple had planned to attack the U.S. in 2011.

According to FBI's director Comey, Farook and Tashfeen could have staged a marriage in the U.S. to plan the attack. Reports also said that the person identified to buy guns for the attack was a relative of Farook.

Meanwhile, President Obama had been "spectacularly wrong" about the security of visa screenings in keeping foreigners from entering the country. However, Malik had entered the U.S on a fiancee visa.

Our government apparently didn't catch the false address in Pakistan that she listed on her application,"Charles Grassley, a Republican Senator and committee member said, the Irish Times reported.