A town bank was robbed at gunpoint this morning.
Two men walked into Nat West in High Street, Lutterworth, shortly before 10.30am and threatened staff with a firearm.
It is not clear currently whether they escaped with any money.
Armed officers were called to the scene and the branch was cordoned off for forensic examination throughout the morning.
Later, three men were arrested on suspicion of involvement in the raid.
They remained in police custody this afternoon while they were questioned by detectives.
A Leicestershire Police spokeswoman said: "Two men entered the premises and threatened a staff member with what is thought to be a firearm.
"They left the premises in a dark coloured Volvo estate car.
"In the interest of public safety a firearms response was deployed.
"Three men have been arrested in connection with the incident and are currently in police custody.
"Investigations are in there very early stages."
Detective Inspector Shaun Orton said: "I would like to speak to anyone who saw the vehicle either before or after the incident. Were you in the area? Have you seen the vehicle since."
Contact police on 101 or Crimestoppers, which is anonymous, on 0800 555 111.
Two men walked into Nat West in High Street, Lutterworth, shortly before 10.30am and threatened staff with a firearm.
It is not clear currently whether they escaped with any money.
Armed officers were called to the scene and the branch was cordoned off for forensic examination throughout the morning.
Later, three men were arrested on suspicion of involvement in the raid.
They remained in police custody this afternoon while they were questioned by detectives.
A Leicestershire Police spokeswoman said: "Two men entered the premises and threatened a staff member with what is thought to be a firearm.
"They left the premises in a dark coloured Volvo estate car.
"In the interest of public safety a firearms response was deployed.
"Three men have been arrested in connection with the incident and are currently in police custody.
"Investigations are in there very early stages."
Detective Inspector Shaun Orton said: "I would like to speak to anyone who saw the vehicle either before or after the incident. Were you in the area? Have you seen the vehicle since."
Contact police on 101 or Crimestoppers, which is anonymous, on 0800 555 111.
