CCTV stepped up on city's roads
West Midlands Police are stepping up CCTV surveillance of the main routes into Birmingham city centre to keep track of suspect vehicles.
Extra officers have been put on duty at specific areas of the city to provide a visible deterrent.
Birmingham City Centre was evacuated on Saturday night after police identified what they said was a "credible threat".
West Midlands Police said more use would be made of CCTV and eight more cameras would be installed.
Around 20,000 people were forced to leave the city centre on Saturday and four suspect packages were blown up.
West Midlands Police said they had received intelligence of a possible threat to the area, at about 2015 BST.
West Midlands Police put up an exclusion cordon around the A38 inner city ring road after the warnings were received.
Since Saturday's evacuation police are more visible around the city centre, particularly around New Street station and outside mosques and police stations.Story from BBC NEWS: