French firefighters had been trying to rescue a person , when secondary collapse occurred . U.S. , Mexican teams brought in to help with more rescue , lifting devices . By 5 p.m. Sunday , firefighters determined no one else alive under rubble .
French team had been trying to rescue a person Tuesday when secondary collapse occurred . U.S. , Mexican teams brought in to help with more radar , lifting devices . By 11 p.m. Tuesday , teams determined no one else alive under rubble .