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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Bright and blustery conditions with a few scattered showers.
Becoming wet and windy during the morning, with gales in exposure as occasionally heavy rain sweeps eastwards.
Police have released pictures of a crash scene after a 15 year old was killed in a hit and run.