Tweed-Bryon police are appealing for witnesses and information after more then a dozen grave sites were damaged at the Tweed Heads Lawn Cemetery in Sunshine Avenue.
A spokesperson said police were appalled that the vandals targeted a number of children grave sites where damage to headstones, ornaments, plaques, vases, toys and other artefacts were visible.
Police say the objects were smashed and thrown around the lawn of the cemetery.
They added that family members were devastated when learning the news.
Police are encouraging anyone with information to contact Crime Stoppers on 1800 333 000 or Tweed Heads Police Station 07 55360999