Man accused of killing George W Bush's cardiologist may have been seeking revenge, police say

Joseph James Pappas, 62, should be considered armed, dangerous and possibly suicidal, Houston police chief Art Acevedo told a news conference. There was a lot of planning and, sadly, some skill,” Mr Acevedo said of the 20 July attack on Dr Mark Hausknecht. Dr Hausknecht was gunned down while riding his bike to work at Houston Methodist Hospital, which is part of the busy Texas Medical Centre.