A hush descended over a normally bustling Tsim Sha Tsui street yesterday as friends and families of those killed in the Top One blaze visited the site to pay their respects. United in grief, mourners came throughout the day to light joss sticks and make offerings to the dead outside the burned-out bar. Some arrived in cars, presented their gifts and prayers, then drove away to try to cope with their grief in private. Others stood in tearful groups, staring at the blackened remains of the bar, seemingly unable to leave the spot at which they had lost their loved ones. Above them, four firemen picked through the wreckage, searching for clues to help them pinpoint the cause of the blaze. The Fire Services Department has warned it could be weeks before a full investigation report is issued.