Two men have been arrested on suspicion of cultivating cannabis after about 200 plants were found at a Royston address.
Police were called at 2.40am on Friday to an address in Wordsworth Close following reports of a possible burglary.
But when officers arrived at the scene, several people ran from the area.
Police then gained entry to the address where a suspected cannabis factory – with 200 plants – was found.
A 24-year-old man from London and a 28-year-old man of no fixed address were arrested on suspicion of cultivating cannabis.
Both men have been released on police bail until December 17.
Anyone with any information about this incident is asked to contact the North Herts Local Crime Unit on 101, quoting crime reference G4/15/722.
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