Be in the possession of sb.

归某人所有；拥有某物。

youdao

The card must be in the possession of the US permanent resident at all times.

卡片必须一直是在美国永久居民的 财产 。

youdao

First, the weapons should be intended for use only in retaliation after a nuclear attack. Second, the possession of the weapons must be a temporary expedient.

首先，这些武器应当只在遭受核袭击后反击时才使用。其次，这些武器的拥有必须是一种临时的应急手段。

《柯林斯英汉双解大词典》

They confronted the owner of the bar, who was suspected to be in possession of the laptop, and showed him photographs and screen shots which were by then plastered all over the social networking site.

FORBES: How Twitter Helped Snag A Laptop Bandit

Also, the dog cannot be left in possession or control of anybody under the age of 16.

BBC: NEWS | UK | England | Merseyside | Merseyside's dogs amnesty begins

As a result, in the event of conflict with Iraq, Saddam Hussein's forces will be better equipped, in possession of better intelligence and in more secure domestic control than would otherwise be the case.

CENTERFORSECURITYPOLICY: Center For Security Policy