Dubai's police chief says he's almost certain Israel was involved in last month's assassination of a senior Hamas official.

Dahi Khalfan Tamim says if proven then an arrest warrant should be issued for Israel's top spy, the man who's in charge of Mossad.

Robert Fisk is the Middle East correspondent for the British newspaper the Independent.

He says, if Israel is behind the assassination, then Tel Aviv could find itself in a diplomatic crisis with some of it's European allies.