Two men fled empty-handed after breaking into a Sleaford school.
The pair got into Kesteven and Sleaford High School on Jermyn Street between 6.26pm and 6.48pm yesterday (Monday), says PCSO Amy Michie from Sleaford Neighbourhood Policing Team.
Once inside the alarm was activated and the intruders are said to have ran out of teh building and nothing was stolen.
CCTV is being checked by police officers.
If you have any information please contact Lincolnshire Police on 101 quoting incident number 64 of 5/5/15.