Latest: Brother of homeless man found dead in hospital could see 'he was dead a long time'

Latest: The brother of a man found dead in a Dublin emergency department wants to know why he was left there so long.

Update - 12.29pm: The brother of a man found dead in a Dublin emergency department wants to know why he was left there so long.

40-year-old Brian Hamilton was found in a chair in the waiting room of Tallaght Hospital on Saturday.