Four killed by truck driven into crowd in Swedish capital

By Johan AhlanderSTOCKHOLM (Reuters) - A truck plowed into a crowd on a shopping street and crashed into a department store in central Stockholm on Friday, killing four people and wounding 15 in what the prime minister said appeared to be a terrorist attack.Police said they had arrested one person in a northern Stockholm suburb after earlier circulating a picture of a man wearing a grey hoodie in connection with the investigation into the attack on Drottninggatan (Queen Street) using a hijacked