Rewrite in the Passive voice

Some people saw a UFO in the sky above London last night. They reported it to the police. The army sent a helicopter to look at it more closer. The UFO shot the helicopter down and killed both men in it.People have given photographs of the UFO to the police. Experts are looking at them now.

now they are looked by experts

Правда про фото забыли,но и за это спасибо. Я вообще эту тему не понимаю

a ufo in the sky above london has seen by some peopleit was written by them to the policea helicopter was sent by army to look at it more closerthe helicopter and both the men it was shut down and was killed