Moscow ? The director of a Moscow market where the roof collapsed, killing at least 61 people, was charged with negligence, prosecutors said Friday, as hope faded for finding more survivors after Europe’s second most deadly such accident this winter.

Hundreds of workers labored around the clock to clear the enormous mound of concrete and steel at the Basmanny market using power shovels and other heavy equipment – an indication of the limited hopes that anybody was alive underneath.

Prosecutor Anatoly Zuyev said the market’s director, Mark Mishiyev, had been charged with negligence leading to deaths, which carries a maximum sentence of at least three years.

Zuyev also said prosecutors had ordered an analysis by explosives experts and a comprehensive construction analysis would follow.

Officials had all but ruled out terrorism as the cause of the collapse, saying it was probably due to the buildup of heavy snow, design flaws or maintenance errors.