AFGHANISTAN, December 17 - Iranian security personnel clashed with prisoners in Karaj, Alborz Province on December 17, reportedly killing one and injuring up to 100 others. A foreign-based Iranian human rights organization reported that Karaj Central Prison security personnel violently suppressed prisoners protesting inmate executions and other acts of violence, citing an informed source. The source alleged that protests erupted after security personnel transferred four prisoners to solitary confinement and intended to execute them at an unspecified time. Inmates from units two, three, and five reportedly chanted anti-regime slogans and broke doors and cameras within the prison. Prison guards opened fire on the protesting inmates in an attempt to quell the unrest, resulting in roughly 100 inmate casualties and at least one death. Karaj residents and social media users additionally reported local internet outages and a heavy security presence in the vicinity of the Karaj Central Prison on the evening of December 17.