St. Petersburg police are warning about an "alarming" increase in online sexting extortion, or blackmail, involving people's nude photos. Since the start of the year, the department says detectives have investigated 34 cases involving underage people and adults. It's more than twice the number that was reported to authorities last year during the same time period. This is what typically happens, according to police: A person meets the offender on a dating app and, after sending private photos, the crime begins. The offender then tells the person they'll publicly post the images to friends and family unless they pay. For more: https://tinyurl.com/yphzv8pu ►Subscribe: https://on.wtsp.com/youtube ►Website: https://www.wtsp.com/ ►Facebook: https://facebook.com/10TampaBay ►Twitter: https://twitter.com/10TampaBay