Dubai murder suspects climb to 26

I'm not an investigator or remotely close to being labeled one, but something tells me a case with 2 or 3 suspects doesn't seem near as bad as having to deal with 26. How would you even begin? Where would you begin?! The news story I chose deals with the murder or Hamas leader Mahmoud al-Mabhouh. Investigators had it "narrowed down" to eleven suspects when Dubai police announced that they had 15 new suspects. Investigators now have the daunting challenge of narrowing down this huge list of suspects. Police in Dubai, India suspect that secretive Israeli foreign intelligence unit is behind the attacks. Not only is the amount of suspects an issue to deal with, but also the fact that these suspects are carrying passports from various point around the world (passports from Australia, France, Ireland, Great Britain). Countries that are helping out with the investigation also noted that those passports were created in a legal manner - what a shocker.