Police spokesman Roger Grimwade said the six or seven hijackers remained on board the aircraft , which arrived from Cyprus at 4.30 a.m. ( 0330 GMT ) .
<response> Police spokesman <person>Roger Grimwade</person> said the six or seven hijackers remained on board the aircraft , which arrived from <location>Cyprus</location> at 4.30 a.m. ( 0330 <misc>GMT</misc> ) . </response>