Immigration officers had their tyres slashed and were pelted with eggs when conducting a raid in east London.
As part of an operation to target illegal working, Home Office immigration enforcement officers visited two businesses on Chapman Street in Shadwell on Wednesday, July 22.
At the first premises, three men of Bangladeshi origin were found to be working in breach of their conditions of stay in the UK and were arrested. All three have been detained pending their removal from the UK. No arrests were made at the second business.
On returning to the vans, officers found tyres had been slashed or deflated and there had been some damage to the body and paintwork.
An onlooker tweeted that the officers were also pelted with eggs from a nearby tower block.
Replacement vans were sent to collect the officers and those detained.
A Home Office spokeswoman said: "These arrests send a clear message to those who believe they can abuse the UK's immigration laws. Anyone who is found to be here illegally will face removal from the country.
"We would urge anyone with detailed and specific information about suspected immigration abuse to get in touch.
"The Home Office will not tolerate abuse or criminal damage of this kind, and any offences will be reported to police immediately.”
The damage was reported to the Metropolitan Police which is investigating.