The weapons were detected when staff from a local energy company entered and read the meters of the boiler. They could not get in because the door was locked. After finding the master key, the staff could get in and then got to see what had been hidden in there, probably by the asylum seekers.
It was not a question of a small hunting guns, but several real firearms according to respondents. They then called the local police who in turn contacted the security police. At the County Police Department in Östersund was not known to the task of arms cache when Avpixlat called and could not refer to someone.
http://www.thegatewaypundit.com/2015/11/weapons-cache-found-hidden-at-swedish-migrant-center/
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