I read one chapter of a manga, but I don't know the name. I think I only read the first chapter.
It was about a plane that was taken over by a bunch of terrorists. On board of this plane was a police agent. I think he was something like a negotiator. He talks with a women that sat next to him and explains to her that there was something wrong with the gun. Can't really remember what it was...

So, any ideas how this manga is called?

Hanzai Koushounin Minegishi Eitarou?

Yeap! That's the one! Thanks!