To report an online scammer on Facebook, log into your Facebook account, locate the content you want to report, click the Options link or a similar button next to the content, select Report, and then provide a reason for reporting the content or user. The exact process of reporting a scammer on Facebook depends on the content you want to report and the device used to access Facebook.
To report a Facebook profile via the Facebook mobile application, visit the Facebook profile you want to report, tap the three vertical dots on the profile, and then tap Report. On the new page, select the reason for reporting that profile, and then click Done. To report a photo, tap the photo on Facebook, and tap the Menu option on your mobile device. On the shortcut menu, select a reason for reporting the photo under Choose A Reason, and click Close.
Alternatively, to report a spam message, open the message, tap the Menu button, tap Report at the bottom of the shortcut menu, select your reason for reporting the message, and then tap Close. To report a spam message via computer, click the gearwheel icon on the chat window, select Report As Spam Or Abuse, and then click Close.