Supt Kevin Purcell, of West Mercia Police has said four children were playing near the lock, but two fell in and another then went to try and get them out, while the fourth ran home to raise the alarm.
This video shows the canal where three children entered the water. Police say they are 'working hard to establish exactly how Imie came to be in the water'.
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They were taken as a precaution, and residents are being advised to keep windows and doors closed as teams continue to clear the spill.
Footage released shows the moment the two carriages collided in what’s been described as ‘the equivalent of a family car crashing at 90mph’
Rashid Abdilah Jama, aged 39, was sentenced today to 13 and a half years at Birmingham Crown Court for raping a woman in Alum Rock in 2005.