(AGI) Rome, Sept 29 - No link has been found between theIslamists of ISIS and the murderers of Italian NGO worker,Cesare Tavella, in Dhaka, and the Bangladesh government is notruling out other possibilities, said Interior Minister,Asaduzzaman Khan Kamal. Deputy police commissioner, MuntashirulIslam, said it was a premediated action and: "There are otheroptions on the table." Spokesman for the elite police troops ofRapid Action Battalion, Maksudul Alom, said it may have been acommon crime, and the security forces were "concerned". CesareTavella, an aid worker with Dutch NGO ICCO, was shot dead onMonday evening while out jogging in the Gulshan neighbourhood,a residential area where the diplomatic community lives. A fewhours later, SITE, a U.S. organisation that monitors Islamistwebsites, published messages attributed to ISIS claimingresponsibility. The minister said ISIS has no presence inBangladesh and that in any case the people who tried to recruiton behalf of the organisation in the past had already beenarrested. The U.S., Britain and Canada have restricted themovements of their diplomats and have said they have "reliable"information that there could be further attacks on westerners.The U.S. Embassy has advised its diplomats not to go out afterdark, to avoid places crowded with foreigners, includinginternational hotels and warned of the possibility of attackson U.S. targets. The British legation has also urged itsdiplomats to stay away from events where they would be withother foreigners, warning of the risk of attacks "at the end ofSeptember". On Saturday the Australian cricket team postponedits departure for Bangladesh because of a government warning ofpossible risks (AGI) .