the pair identified as 28-year-old syed rizwan farook and his wife tashfeen malik fleled the scene of the massacre in a black suv. both died two miles away from the shooting in a gun battle with police. inside the suv investigators found assault rifles and semiautomatic handguns. >> based on what we have seen and based upon how they were equipped, there had to be some degree of planning that went into this. >> reporter: farook an environmental specialist for san bernardino left the party in anger and turned a short time later with malik and dressed in assault style clothing and armed. i called my kids and said what happens here, there is a shooting, be safe. >> reporter: farook's brother-in-law condemned the attacks and expressed his remorse. >> i am sad. deeply sad and shocked that something like this happened. >> reporter: as the investigation continues to unfold, authorities say they have not ruled out terrorism as a motive. >> it is a possibility, but we don't know that yet and we are not willing to go down that road yet. >> reporter: authorities worked late into the night at the