(CNN) Seven people were killed and 48 wounded when three attackers drove a van into pedestrians on a bridge in central London Saturday night before producing knives and going on a stabbing rampage.

Here are some of their accounts, along with other moments from London's eight minutes of terror.

'I heard a boom behind me'

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A witness who was at the London Bridge during the attack describes the scene as the van mowed down pedestrians, saying he saw a person jump off the bridge into the River Thames to escape