Details regarding the shooters in last week’s San Bernardino terror attack have failed to answer key questions.

Although the FBI has decided to investigate the deadly incident in which Syed Rizwan Farook and his wife, Tashfeen Malik, killed 14 people and injured 21 at a holiday party at Farook's place of employment it remains unclear what exactly drove the couple to attack.

The couple is now known to have been inspired by the ISIS terrorist organization, but there is no evidence that ISIS directed or ordered the massacre. CNN reports, an anonymous law enforcement official said that the attack is appearing more and more like an act of self-radicalization.

The couple had never been in any trouble with the law before, and their relatives claim to have been unaware of their radical views. Authorities have speculated that the attack might have been linked to workplace issues regarding a perceived animosity towards Farook's religion.

Malik and Farook, who were parents to a six-month-old baby, had an array of weapons in their home, including pipe bombs, guns, and rounds of ammunition. The unused arsenal suggests that their terror plans were much larger than merely attacking a holiday work party.

ISIS has come forward and described the couple as supporters of their cause, but has stopped short of saying they were members of the group. Tashfeen Malik, however, did make an online declaration of her loyalty to Abu Bakr al-Baghdadi, leader of ISIS, while the attack was occurring.

Obama Addresses San Bernardino Shooting

When addressing the nation on Sunday night, President Obama made a point of saying that the
couple had gone down a dark path of radicalization and embraced a perverted version of the Islamic faith.

CNN reports, Democratic presidential hopeful Hilary Clinton has made it clear she will be using her words carefully when talking about terrorist acts. Speaking on ABC's "This Week," Clinton said she would not use the term "radical Islam" as it did not do justice to the majority of Muslims who are peaceful people.

Republican frontrunner Donald Trump, on the other hand, thinks that recent events actually necessitate profiling.

According to the New York Times, Trump said that U.S. citizens have been politically correct for far too long. Speaking on CBS’s “Face the Nation,” Trump suggested that this attitude has had deadly consequences. “People are dead. A lot of people are dead right now. So everybody wants to be politically correct, and that’s part of the problem that we have with our country,” said Trump.