Where do I report players?

[dznSpencer]

Hello, I came across a player harassing another player in chat today, I messaged the "bully" and asked him to stop harassing people, he then went on to begin talking back to me, even began cursing. I'm not sure if I'm allowed to post the screenshots here but if asked for I can provide.
 

[NovusNova]

Submit a support ticket with your screenshots attached as evidence to Support, Link: http://support.warframe.com/

 

[dznSpencer]

Just now, NovusNova said:

Submit a support ticket with your screenshots attached as evidence to Support, Link: http://support.warframe.com/

 

Thanks!

[carnaga]

In-game; Menu -> Communication -> Friends -> View recent players. Right click on the name and select the way you want to report. Provide as much evidence/proof as possible: screenshots / video.