Three people have been arrested in connection with an incident on the perimeter of HMP Highpoint prison, near Stradishall.
At about 4pm on Tuesday, December 22, police received a report of suspicious activity.
A 46-year-old woman and 32-year-old man were arrested on suspicion of possession of a prohibited article and possession with intent to supply class A drugs.
A 27 year old male was arrested on suspicion of possession of class A drugs.
All three are from the Bury St Edmunds area.
They were taken to Bury St Edmunds police investigation centre for questioning and later released under investigation pending further enquiries.
Two doctored tennis balls were recovered from the location, police said.
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