A 31-year-old Tucson man pleaded guilty this week to two counts of production of child pornography.Shams Khan Rehman will face sentencing on Sept. 3.According to a news release from The United States Attorney's Office, District of Arizona, the plea agreement said Rehman admitted that he used Snapchat to watch adults, whom he paid, exploit several minors under the age of 12.The people produced images and videos documenting the abuse, the news rel…