Two people locked themselves together this morning outside the entrance of the IGas exploration site at Tinker Lane in north Nottinghamshire.
They were protesting about the imminent drilling for shale gas at the site near Blythe. Two men aged 31 and 45 were arrested on suspicion of obstruction, a 35-year-old man was arrested on suspicion of breaching the peace and a 51-year-old man was arrested on suspicion of committing a public order offence.
There were complaints about the use of force by police.
Today also saw the delivery of parts of the drilling rig. Tinker Lane will be the first site in the East Midlands to be drilled for shale gas.
Photos: Eric Walton