A teenager arrested after knives were found in a Cleethorpes school has been released with a warning, police say.
Police were called to Matthew Humberstone Upper School in Chatsworth Place after receiving reports of a pupil taking knives into the building.
Two knives were found at the scene on Tuesday afternoon.
Humberside Police arrested the 15-year-old boy, from Grimsby, on suspicion of affray and possession of bladed articles on Thursday morning.
He was released from custody at 1130 BST with a "final warning", a spokeswoman said.