Transcript for Terror attack in Stockholm, Sweden

We move on to the other major story developing at this hour. The deadly truck attack in Sweden, with all the hallmarks of terrorism. The attacker using a stolen truck, speeding for blocks down a crowded mall, slamming into a department store. Tonight, an arrest has been made. Was this the man behind the wheel? Terry Moran on the scene in Stockholm. Reporter: Shoppers in disbelief then panic. Police scouring videos searching for clues. It shows the truck mowing down pedestrians, crashing into this department store. Smoke billowing out. At least four dead, more than a dozen injured. Nine of them critical. At this hour, a nationwide manhunt is under way. Police reporting one arrest has been made, 20 miles away from the crime scene. A man who matches these photos on an escalator. Sweden's prime minister, with reporters here, saying Sweden has been attacked. Everything indicates this has been a terrorist attack. Authorities say the carnage began just before 3:00 P.M. Today. A beer delivery truck you can see bodies lyinon the street. A horrific scene. Terry Moran joins Gorsuch scheduled to be sworn in

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