Three men are in hospital in Peterborough after being shot on a travellers' site on the outskirts of the city. Two were in a critical condition and the third was described as "stable".
Armed police were called to the Oxney Road site at 10am but say exact details of what happen remain unclear.
More top news
The employee was sorting through rubbish at waste company Amey's Waterbeach facility.
Ice is expected to form on some surfaces from late Tuesday afternoon and last overnight into Wednesday morning.
Ian Tang was last seen at 2.30am on Sunday leaving the KA club in North Walsham.