The development in the supporter scene would eventually catch the attention of the authorities. The Stasi assigned a group of two full-time officers from the district administration to the supporter scene during 1982-83 season. From then, supporters were accompanied, observed and documented. This was a measure that had previously also been applied to the supporter scene of 1. FC Union Berlin. The authorities had allegedly been particularly alarmed when supporters of BFC Dynamo unfurled a poster in memory of Lutz Eigendorf with the text "Iron Foot, we mourn you!" during a match at the Friedrich-Ludwig-Jahn-Sportpark in April 1983. Supporters had also started a fan club in honour of Lutz Eigendorf. The Stasi would try to control the supporter scene with a broad catalogue of measures: persistent talks, intimidation attempts, reporting requirements and arrests. It would also attempt to infiltrate the fan clubs by unofficial collaborators (IM). All football fan clubs in East Germany had to undergo registration. According to Stasi information, BFC Dynamo had six registered fan clubs and 22 unauthorized fan clubs in 1986. Unauthorized fan clubs were those that were unregistered or did not meet DFV guidelines.