Police want to speak to a man known to use the name Stefan Nardi, and claims to be 37 years old and Italian.
We have been following up several lines of enquiry following the discovery of this multi-million pound cannabis production in Dartford.
We have released an image of a man who goes under the name of Stefan Nardi, although this could well be an alias.
If you know this man, who is believed to have links to Deptford, or have any information about his whereabouts, I'd urge you to contact us.
Anybody with information should call Kent Police on 01474 366258, quoting CAD 26-0284, or Crimestoppers on 0800 555111.
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"All it takes is for somebody to see me - and I could just die, just like that. I could want to go to the shop and not come home."
Before the killing, Peters searched the internet for "serial killers", "treatment of child killers in prison" and "premeditated murder".
Arriva Rail North, Greater Anglia and South Western Railway are all affected.