Three officers and a police dog have been injured when they came under attack by crowds at an illegal rave in the south of Lincolnshire.
Lincolnshire Police received complaints at around 11pm on Saturday, May 23, about loud noise and anti-social behaviour in an area of Twyford Woods just off the A1 near Bourne.
According to police, when officers arrived, they came under attack from around 200 people of the estimated 1,000 revellers who were at the rave.
Two police officers and a police dog were hit by the missiles from the crowd and suffered minor injuries.
Another police officer was struck by a car he was trying to prevent from entering the grounds of the illegal rave.
He suffered serious injuries, but they are not life threatening.
Four people have now been arrested after the rave — one man and three women aged 18, 20 and 21 from Norfolk.
Police have seized a number of sound amplification systems and generators, and remain at the site today along officers from neighbouring forces.
The Twyford Woods rave was illegal and unsafe, police said, and they will stop any other revellers going to the spot.
Just in from work. Hardest shift in years. Faced unparalleled challenges with rave last night. Alongside some very brave officers – thankyou
— T/Supt Paul Timmins (@C_InspTimmins) May 24, 2015