Police Wednesday searched the premises of one of Sweden's three nuclear plants after an anonymous bomb threat was made but nothing suspicious was found. Bomb squads with dogs were deployed in the search at the Forsmark plant, 140 kilometres north of the capital Stockholm, dpa quoted Uppsala police spokesman Christer Nordstrom as saying. Late Wednesday afternoon, police began to scale down their presence, but the search of the facility was likely to continue a few more hours, Nordstrom said. Nordstrom said the threat was treated as "serious" since it was aimed at a nuclear plant, but declined to offer details of the threat or who had made it.