alerted, warned
Nous avons alerté la police.
We alerted the police.
Il m'a alerté du danger.
He warned me of the danger.
Dumbledore avait alerté Fudge.
Dumbledore had alerted Fudge.
— Harry Potter et l'Ordre du Phénix (2007)
Alors que je ne dormais pas encore, un raffut dans la rue m'a alerté.
While I was still awake, a commotion in the street alerted me.
— Paddington 2 (2017)
On a alerté les motards de la police.
The police motorcyclists have been alerted.
— Picnic (1955)