The Plastic People continued to perform and record despite increasing police pressure.
By September 30, 2009 a number of the monks had left under police pressure.
However, files found in 1989 show that Čert was involved with state, working under police pressure as a secret informant.
"Whatever you are saying is said under police pressure."
Left unsaid is what would have happened without such police pressure.
"The middlemen are waiting for the police pressure to die down, then they start exporting them."
As a result of the police pressure, many dealers have moved off the streets and buying drugs has become more difficult, he said.
But whether due to police pressure or not, the behavior of drug dealers in many parts of the city is changing.
But the police pressure appears to be making a dent.
The group exists for a few months before disbanding under police pressure.