Dubai police say, they have uncovered 15 more suspects in the last month's killing of a senior member of the Palestinian Islamist militant group, Hamas. Six of the new suspects in the killing of Mahmoud al-Mabhouh had UK documents, while three were Irish and another three Australian. Many of the suspects allegedly used credit cards issued by the same bank, police added.On Tuesday, Israeli opposition leader Tzipi Livni applauded the killing, which Dubai believes Israel was behind. However, Israel has repeatedly refused to confirm or deny its involvement.