valletta bomb use kill maltese anti-corruption blogger daphne caruana galizia probably trigger call boat malta investigator say tuesday lay initial evidence three suspect caruana galizia die powerful blast drive near home village bidnija oct. 16 kill appal europe raise question rule law tiny mediterranean island brothers alfred george degiorgio vince muscat arrest early month connection murder three men know police deny wrongdoing police start lay evidence trio malta court decide whether order trial one chief investigators keith arnaud describe team u.s. federal bureau investigation bring malta government help solve crime focus phone number receive text message time explosion bidnija police say number attach mobile phone circuit board use remote-control devices appliance switch a.m. local time bidnija day explosion go grid time blast part circuit board late find wreckage car cell phone data suggest device trigger call coast cctv video show boat own degiorgio brothers put sea around a.m. day kill late see still sea 2.50 p.m. idle time explosion return harbor three suspect never target caruana galizia often fierce blog lead question possible motive blogger family say people order kill remain large arnaud reveal police already tap phone george degiorgio time murder hear ask two separate people top credit mobile phone number morning blast go detail local media report number might trigger bomb arnaud first person call testify pre-trial hear delay twice past week initial two magistrates assign case recuse third magistrate claire stafrace zammit reject call defense also abstain case caruana galizia praise husband dismiss request frivolous hear resume wednesday malta court hear blogger bomb probably trigger boat sea