Police are investigating after bottles of milk stored in a west Suffolk primary school’s fridge were tampered with and filled with a cleaning product.

The incident happened at Lakenheath Community Primary School between Friday, October 6, and the morning of Monday, October 9.

It was discovered by staff on the Monday that two half-empty bottles of milk left in the fridge had been tampered with.

Analysis of the bottles established they had been filled on the school premises with a cleaning product.

Thankfully, no milk was given to any pupils or staff.

A letter sent out to parents by headteacher Sally Esom, said: “The tampered milk was discovered by vigilant staff first thing on Monday morning before the start of school.

“The milk was immediately removed and later quarantined to ensure that nobody could drink from it.

“There was no risk to any adults or children.

“The police were immediately notified and an investigation began into how and why this has occurred.

“This matter is being treated very seriously by the school, the Police and Suffolk County Council.

“We do not believe there is any further threat to anyone at the school.”

The school has swiftly introduced additional security measures following the incident including adding locks to classroom fridges and disposing of all unused and non-sealed produce daily.

The letter goes on to say: “I would like to take this opportunity to reassure you that we take the safeguarding of our entire school community very seriously and are working alongside the Police and Suffolk Safeguarding team to investigate this matter fully.”

No further incidents have been reported to the school or others in the area and police are treating this as an isolated incident.

A police spokesman added that the school are continuing to support police with their investigation and officers are keeping an open mind as to the motive.

Anyone who has any knowledge of the incident or witnessed any suspicious activity should contact Suffolk police on 101, quoting crime reference 37/66067/17, or Crimestoppers anonymously on 0800 555111.