Abu Dhabi residents have received a second safety alert over missile threats in less than three hours. Authorities urged the public to take immediate shelter in a warning sent to mobile phones at 9.55am. The all-clear came about half an hour later. An earlier alert was issued at 7.15am, which was followed by a series of loud booms that rang out across Abu Dhabi, with the all-clear coming about 25 minutes later.
