Five postboxes and a telephone box have been blown up around Chichester.
The vandal who damaged them with suspected explosive devices in the Sussex Cathedral city on Boxing Day night is being hunted by police.
Chichester residents are warned to stand at least 160 feet away if they spot other suspicious devices in case they go off and dial 999.
Sussex police said while they believe the devices were planted to cause damage, they could potentially to injure people.
Detective Inspector Alan Pack of Sussex Police said: “We believe something has been placed at the locations that has caused a small explosion resulting in the damage.
“It’s important to stress that we believe these criminal acts were intended to cause damage and nobody has been hurt, but there is significant potential to cause injury and we have dedicated officers to the investigation as a matter of urgency.
“Our crime scene investigators will be at the locations carrying out thorough examinations and officers will be carrying out house to house enquiries in the area.
“We are very keen to speak to anyone who saw any suspicious vehicles or people near to post boxes or telephone kiosks, and also owners of dash cams who may have footage that cover the locations during the relevant times.
“If you see anything suspicious at other post boxes, as a precaution, stay at least 50 metres away from the location and call us on 999.”
The six were targeted in Bosham, Lavant, Charlton, East Dean and Oving between 10pm and 12 midnight.
The post boxes were outside The Reach, Smugglers Lane, Bosham; at the entrance to Bosham Hoe on Hoe Lane junction with Smugglers Lane, Bosham; on the A286 junction with St Nicholas Road, Lavant; outside The Fox Goes Free public house in Charlton; and near the Star and Garter public house, East Dean.
The phone box was at the High Street junction with Highfield Lane, Oving.
Photo of St Nicholas Rd postbox (c) Google