Police have confirmed more underwater searches have been authorised to take place this week as police continue to look for missing Dulcie Brewster.
The searches are due to take place either tomorrow (Tuesday) or Wednesday.
Dulcie Brewster has been reported missing since Monday, April 15, and police have carried out several searches in the area.
The family have also launched an appeal for information.
Anyone who has seen Dulcie recently, or who has any information concerning her whereabouts, is asked to contact Lincolnshire Police on 101, quoting incident number 236 of April 15.