Police are investigating after two youths were spotted running away from Ingoldmells Promendade following three arson attacks.
The incidents all happened between 8pm and 10pm on Sunday, April 23 along the promenade at Vicors Point.
Areas of grass and undergrowth were set fire to.
A spokesperson for Lincolnshire Police said: “Two youths were witnessed running away from the location at 9.45pm in the direction towards Fantasy Island, they ran down the slip way near to Ba Rumba P/H and disappeared onto the Coastfield’s Caravan Park.
“If anyone was in the vicinity of the promenade during those times and recalls seeing anything that may assist police with their enquiries to please call 101 reference incident number 453 April 23.”