<sod >Explosions and gunfire haveÃÂÃÂ been heard during a police operationÃÂÃÂ in Brussels as investigations continue into Tuesday's bombings.< eod>< sod > A terror suspect has been "neutralised" during aÃÂÃÂ police operationÃÂÃÂ in Brussels as investigations continue into Tuesday's bombings.< eod>