The car stopped at number 58, Graham's house, and two uniformed officers got out and knocked on the door.

A moment later an officer knocked at the door, which, in the meantime, Barney had unbolted.

A second officer apparently knocked on the door in front of the residence, but left when he received no answer.

For example, where officers knock, but before announcement are invited in, they no longer need to announce.

The political officer knocked on the cabin door and entered immediately, without given Emelyanov a chance to invite him inside.

According to the police report, when officers knocked on the door to the room, they were greeted by Beck, and "the smell of marijuana."

And the officer immediately went and knocked at the door of communication, which the valet opened to him.

Several uniformed officers were circulating in the crowd and knocking on doors, seeking anyone who had seen or heard anything.

But before he could settle into his window seat, the senior technical officer had knocked.

When the car gets there, the officer will knock at your door.