But he said the shortage of specialist officers would exacerbate the measures needed to maintain a cordon in an inner city area to prevent contamination being spread.
East Park Road, at its junction with Leicester Street and Nottingham Road, remained closed for most of Tuesday as officers carried out further inquiries and a cordon would remain around the area, officers said.
Student George Philip Todhunter Bramley, 20, from Gillingham in Norfolk: arrested and charged for Section 14 of the Public Order Act - breach of cordon and demonstrating in a non-designated area.