Uzbek man main suspect in Swedish truck attack that killed four

By Johan Sennero, Anna Ringstrom and Bjorn RundstromSTOCKHOLM (Reuters) - A 39-year-old Uzbek man being held in custody is the suspected driver of a hijacked beer delivery truck that plowed into crowds in central Stockholm, killing four people and wounding 15 in an apparent terror attack, police said on Saturday.The man, previously known to Swedish intelligence services as a marginal figure with no clear links to extremist groups, is suspected of mowing down pedestrians on a busy shopping street