Two men are in custody on suspicion of offences linked to the spate of attacks on sheep across the Midlands after being arrested in Northamptonshire.
Officers responding to a report of suspicious activity in a field near Welford discovered an offence in progress and went on to stop a vehicle on the A14 shortly after 1am this morning (Monday, October 7).
Two Birmingham men aged 23 and 35 were arrested on suspicion of theft and criminal damage - both remain in custody this afternoon.
The stopped vehicle was seized by officers and will undergo forensic examination, a police spokesman said.
Operation Stock is the Northamptonshire Police investigation into reports of illegal sheep butchery and theft that have plagued the county and neighbouring forces this year.