Four people are in hospital and a northbound lane of the A12 blocked after two cars collided this morning.
Police attended the incident between Foxhall Road and Adastral Park at 11.38am.
Initially, the Honda Civic and Peugeot 307 crash resulted in both lanes being blocked.
The four people who have been taken to Ipswich Hospital are not thought to be seriously injured.
Police cleared the road by approximately 12.40pm.
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