The Federal Bureau of Investigation has been brought into the San Bernardino murders investigation and the agency believes that the husband and wife team who murdered 14 people on Wednesday may well have been planning future attacks. The FBI may be soon ready to treat the mass murders as an act of terrorism yet are not willing to do so as of Friday.

After a search of the couple’s home on Thursday, FBI agents found weapons, ammunition, and bombs had been stockpiled for what agents believe would have been available for future attacks, reports The New York Times. In addition to the guns and ammunition, there were over a dozen or so pipe bombs already made and ready for use. The FBI stated that the couple’s trips to the Middle East as well as contacts with Islamic extremists may eventually form the conclusion that Wednesday’s attack was just a prelude to future terrorist style attacks.

Syed Farook and his wife Tashfeen Malik poured over 150 rounds into the holiday party that was taking place at the Inland Regional Center in San Bernardino murdering 14 people and injuring at least another 17 people. Investigators don’t have an immediate motive or if it was a spur of the moment action triggered by something Farook had experienced while attending the gathering.

Some investigators believe that the attack was planned as they noticed that Farook had begun a processes of deleting messages from his cell phone the day before the attacks happened. They don’t think he was angered by something at the party and then came back with his wife and murdered 14 people. Workers at the party, Farook worked as a health inspector, noticed that Farook was, indeed, angered about something and stormed out.

Farook and his wife also left behind three unexploded pipe bombs at the center. While they have linked Farook to Islamic extremists they have no reason to believe he had any recent contact with any of them.