A gang of youths ran amok in Williamson Park taking laughing gas and throwing stolen ice cream at the Ashton Memorial.
Police said that 15 to 20 youths damaged an ice cream van and stole tubs of ice cream and cones on April 15 between 6pm and 9.30pm.
They said it is estimated that the damage and stolen items, plus loss of business will cost around £1,200.
The damage was to the nearside window of an antique ice cream truck which had a brick thrown through it.
The thefts were of 15 tubs of 4.5 litre ice cream which retail at £15 each and three boxes of ice cream cones which retail at £20 each.
They were thrown over the Ashton Memorial in the park.
Police also found multiple canisters of Nitrous Oxide gas (laughing gas) and litter strewn about
They said this suggested the gas had been inhaled in the park, warning that this can be fatal.
"We have CCTV footage of the youths, and we will be pursuing our investigation and bringing the culprits for an interview," said a police spokesperson.
"If you know who was involved, then please contact 1625@lancashire.police.uk and quote log number LC-20230416-0377."


Lancaster-Morecambe train services cancelled amid heavy rain warnings
Pair jailed for violent attack on man in Lancaster street
Panjab Warriors interview: "Morecambe FC will never be in danger while we are owners."
Canal charity gets the ‘hump’ as Lancaster Canal bridges suffer more collision damage
Lancaster wills company donates thousands to help local community groups making a difference
Morecambe Bay Curriculum wins top award
Lancaster film director's latest action movie now showing in UK cinemas
Appeal after Jack Russell dog found collapsed in Lancaster
Lancaster food companies announced as finalists in new Taste Lancashire Producer Awards
New student apartments block opens in Lancaster
Former BBC reporter and ex-Heysham shipping chief launch popular maritime podcast
Lancaster children get life-saving advice at 'Crucial Crew' water safety event
Crews tackle house fire in Heysham
Police appeal after 20 motorbike thefts in 30 days in Lancaster and Morecambe area
Truck driver jailed for causing death of six-year-old Lancaster girl
Former Morecambe Football Club co-chairmen break silence after shock resignation from board
Royal Lancaster Infirmary ward closed to visitors due to norovirus outbreak
Morecambe Football Club stalwarts resign from board
Heysham coffee shop couple take over Morecambe craft ale bar
Morecambe seafront cafe reopens

