The Boulder Valley School District said six school-issued laptops were intentionally set on fire in recent weeks, a series of incidents officials believe are tied to a viral social media trend targeting lithium batteries. In a letter to families this week, school district leaders warned parents of the trend. Read more at: https://www.9news.com/article/news/crime/school-laptop-fires-social-media/73-e0ce91ee-9dda-4d38-86bd-ad3bf43fb0e3 More local videos here: https://youtube.com/@9news Subscribe to NEXT: https://youtube.com/@Nexton9NEWS Stay connected: 9NEWS Website: https://www.9news.com/ Facebook: https://www.facebook.com/ilike9news X: https://twitter.com/9NEWS Instagram: https://www.instagram.com/9newsdenver/ Download the 9NEWS App: https://www.9news.com/appredirect/ Sign up for the 9NEWSLETTER: https://www.9news.com/email 9NEWS (KUSA) is located in Denver, Colorado.