A police cordon was put in place near the former Grimwades store in Ipswich town centre.
The cordon was put in place on the Cornhill, with several police cars also spotted at the scene on Thursday morning, following reports of an incident overnight.
A spokeswoman for Suffolk police said: "A police cordon is currently in place on the Cornhill following report of an incident overnight.
Officers are making enquiries to ascertain the circumstances of the incident."
The Grimwades shop on the Cornhill was a landmark store that closed down in 1996.
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