The Coastguard was called out last night (December 23) to reports of a laser pen being shone at boats travelling past Broadstairs harbour.
HM Coastguard Margate were tasked by UK Coastguard at 8.43pm.
Coastguard officers along with officers from Kent Police attended but after a search around the harbour nothing was found.
A Margate coastguard spokesman said: “This is totally irresponsible as it could affect the night vision of the crew onboard the boats, anyone caught doing such an act will be dealt with by the police.”
Kent Police has been contacted for further details.