GAZA CITY, Gaza Strip, May 23, SPA -- Palestinian securityofficials say two people have died and four are missingfollowing the collapse of a tunnel under the Gaza-Egypt border. Palestinians use such tunnels to bring food, clothing,fuel and even livestock into the impoverished Gaza Strip, according to a report of Associated Press. Over 20 people have died in tunnel-related accidents thisyear.--SPA www.spa.gov.sa/667196