UPDATE 1-No explosives in package outside Swedish police station

(Adds update from police)

STOCKHOLM, June 12 (Reuters) - Swedish police found no explosives in a suspicious object outside a police station in the southern Swedish town of Linkoping on Wednesday, days after an unexplained blast rocked a local street.

Police said the bomb squad shot at the "package-like" object without it detonating.

On Friday, an explosion on a residential street in Linkoping damaged several buildings and left around 20 people with minor injuries.

There have been several cases in recent years of explosives used in suspected gang-related attacks, and police are investigating whether Friday's blast was connected to local criminal groups. (Reporting by Helena Soderpalm and Anna Ringstrom; additional reporting by Johannes Hellstrom Editing by Andrew Cawthorne)