Oslo's central station was evacuated and all train and bus services halted after an apparently suspicious suitcase was discovered early today.
The abandoned suitcase was removed from a bus using a robot, and Norwegian police said it posed no danger.
"Nothing was found that was of interest to the police," Police chief supt Tore Barstad told reporters. He also said the suitcase search likely had nothing to do with the bombing and shooting on Friday that took 76 lives.
"As far as we know there is no connection," said Mr Barstad.
Earlier, Norway's NTB news agency reported someone had apparently placed a suitcase on an airport-bound bus near railway track 19 and then left.
A witness said the station was surrounded with police cars and fire trucks and that a large area on the south side of the station adjacent to the Thon Hotel Opera was cordoned off.
Reuters