Police are asking the public for help in finding a cyclist involved in a crash with a bus in Christchurch.
Emergency services were called to the crash at the intersection of Whincops Rd and Richmond Ave in Halswell at about 10.15am.
A police spokesperson said one person is reportedly in a serious condition and the Serious Crash Unit is in attendance.
Police are looking to identify the cyclist involved in the crash. She is a woman aged between 60 and 70, Caucasian and of slight build, they said.