This was the time of the "SUS" law, which gave police the power to stop, search or arrest anyone merely on the suspicion that they might be planning to commit an offence.

当时，“嫌疑犯法条”(Sus law)赋予警察权力，只要他们怀疑某人有犯案的计划，就可以实施逮捕。

youdao

The police didnt arrest because he really committed any crime. They said that he was wandering with intent to commit an arrestable offence.

警察逮捕了他并不是他真的犯了什么罪，以警察的说法是因为他四处游逛图谋不轨。

youdao

Duncan Railton, 41, of Cranmer Close, Warlingham, had denied possessing dangerous or noxious things with intent to commit an offence.

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He had pleaded guilty to offences including possession of a firearm, having an imitation firearm with intent to commit an offence, theft and others.

BBC: Wales

If there is evidence an offender intends to commit an offence abroad they can prevent them from visiting that country or travelling at all.

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