"It looks like another case. We've got a lot of bad things going on. Radical Islamic terrorism," Trump stated.

Over the last few weeks, Trump has been stating that certain sections of the society needs to be on the vigilance radar and has been advocating that activities at some mosques be monitored.

Last week, he alleged that several thousand Muslims in New York and New Jersey had celebrated after the twin-tower attack in New York in 2001. His remarks have been condemned by leaders across the political spectrum.

Federal Bureau of Investigation (FBI) which is investigating the case, has not determined yet if it was an act of terror.

The Paksitani-couple, Syed Rizwan Farook and his wife Tashfeen Malik, in a shooting spree killed 14 people and injured 17 others at a holiday party where Farook worked.

Earlier, President Barack Obama did not rule this out as an act of terror, and asked people from rushing towards a judgement until investigations are complete.

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