AUSTIN (AP) – Austin police say they have received more than 150 calls reporting suspicious packages after three package bombs exploded at homes in less than two weeks in the Texas capital. The police department tweeted the figure Tuesday. Authorities have urged people receiving unexpected packages to call 911 without handling, moving or trying to open them. A package bomb left on a doorstep in Austin killed a man March 2. Two similar packages left at separate homes Monday killed a 17-year-old and wounded two others. Investigators originally suggested that the attacks could constitute a hate crime because the victims were all black or Hispanic, but they now say they are looking at all possible explanations. The FBI and other federal agencies are also investigating.