Police are seeking information about vandals who threw stones at buses in the north-east of the city.
Incidents happened on streets including Pitkerro Road, Berwick Drive and Hawick Drive.
A police spokeswoman said: “The implications of throwing any type of missile at a moving vehicle is very serious indeed, for anyone within that vehicle or anyone nearby for that matter.”
A National Express Dundee spokeswoman said: “So far, none of our passengers have been injured. However, National Express takes very seriously any incident which could put its customers or drivers in danger and is working closely with the police on this matter.”
