Update: 1515 hrs
Ministry of Defence have taken the object away.
All roads have been re-opened.
WHAT is being described as a "shell fragment" has been found in Stifford Clays.
Emergency services were called at just after 11am to Premier Avenue after receiving a report.
Essex Police report that a local roadblock has been put in place and a small number of houses have been evacuated.
They are awaiting the arrival of the Ministry of Defence.