one eyewitness saying he's heard gunshots. another witnesses saw the gran driving around 80 kilometers we are hour and says, "there is no doubt it was intentional." an eyewitness account. we're awaiting information from the spanish authorities. we are told number one, they are responding to the scene. you see some of that in the pictures you see there. and two, urging people. remember, barcelona a thriving city and popular tourist attraction this time of year urging people to stay away. don't go there our curiosity and telling people still in the area to be very careful to not move about in any random way and seek the guidance of the authorities responding to the scene. reporters are trying to get more information on this, but peter bergen, that it took such a short period of time for the authorities to say very likely a terrorist attack. peter, stand by. on the phone an eyewitness, pablo morane. this is john king speaking to