Suffolk police say a 44-year-old man arrested in connection with an incident at the US airforce base at RAF Mildenhall on Monday has been detained under section 136 of the Mental Health Act.
The British man was arrested on suspicion of criminal trespass and criminal damage.
Shots were fired by US service personnel and the airfield put on lockdown after reports of a disturbance.
Superintendent Kim Warner, of Suffolk Police, said a vehicle failed to follow security directions at the entrance and drove on to the base.
There was a "short pursuit" and the vehicle was stopped by US security services, he said.
Suffolk Police say an incident at RAF Mildenhall is not being treated as terrorism.
A 44-year-old British man was initially arrested on suspicion of criminal trespass.
The man, who suffered cuts and bruises in the incident, has been taken into custody. Police are not looking for anyone else on the site in relation to the incident.
Suffolk Police say the incident remains an active police investigation at this time and enquiries are on-going.
Shots were fired by US service personnel and a man has been detained after a disturbance at RAF Mildenhall, Suffolk Police said.Read the full story ›
Police in Suffolk have confirmed they're dealing with a "significant incident" at RAF Mildenhall.Read the full story ›
A recovery centre for military veterans is marking 100 years since the death of the double Victoria Cross holder that it is named after.Read the full story ›
Prince Charles has described his pride at being part of a remarkable military family.
The Prince of Wales was in Colchester to mark the 40th anniversary of his role as Colonel-in-chief of the Parachute Regiment.
The Royal guest inspected some of the hundreds of soldiers who make up the regiment and even got the chance to drive an armoured vehicle.
It was also revealed that his younger son, Prince Harry, had a aptitude for sky-diving after jumping with the Red Devils.
- Click below to watch a report by ITV News Anglia's Malcolm Robertson
Prince Harry has been revealed as a 'natural' sky-diver as his father was being honoured at a visit to Colchester Barracks.Read the full story ›
Troops from the 1st Battalion The Royal Anglian Regiment are returning to the UK from Afghanistan today.
They have been based in Kabul on a six month deployment. It's part of Operation TORAL, a NATO mission to provide support and advice to the Afghan government. Unlike previous operations in Helmand, the mission is not about direct combat, but providing security and training.
Servicemen and women from RAF Marham have returned home following their final operation in Afghanistan.
The force has been there since July 2009 and in that time has played an important role in coalition combat missions.
The final ground troops pulled out of Camp Bastion in Helmand province last month.
As the Tornado jets flew into West Norfolk, family of the 170 ground and air crew were there to meet them.
Tanya Mercer reports
Families and pets were reunited at RAF Marham as Tornado bomber pilots returned home from serving in Afghanistan.Read the full story ›