Four residents needed hospital treatment after emergency services were alerted to a chemical smell in a block of flats.
Firefighters, police officers and paramedics were called to Greenhill Court in Lodge Close at 9pm on Tuesday.
Fire crews wore breathing apparatus and specialist detection equipment to try to identify the unknown chemicals involved.
Oxfordshire Fire and Rescue Service sent four engines from stations in Banbury, Deddington and Oxford.
South Central Ambulance Service and Thames Valley Police also attended.
5:19pm Wednesday 2nd September 2015
A WOMAN who found a camera in the shower of a Travelodge has said she feels disgusted by the incident.
7:20am Wednesday 2nd September 2015
ALMOST 40 firefighters were tackling a straw bale fire in a field in Hanwell near Banbury last night.
8:30am Wednesday 2nd September 2015
DRIVERS on three of the county’s busiest roads have been hit by delays more than 28 times every day this year.
7:23pm Wednesday 2nd September 2015
FIREFIGHTERS in Eynsham rushed out this evening to rescue a cow from a river.
1:26pm Wednesday 2nd September 2015
TRAFFIC is building up around the Kennington Roundabout and Southern Bypass Road after a lorry shed “a couple of bags” on the dual carriageway.
9:00am Wednesday 2nd September 2015
THE headteacher at a leading Oxford independent school has claimed mobile phones offer “limitless” possibilities for education in the classroom.