Sean Gannon, a former Boston police officer and a UFC veteran who once fought Kimbo Slice in a street fight, has passed away.<\/p>\n
Gannon’s death was first reported on social media as friends and family confirmed the sad news. MMA reporter Marcel Dorff<\/a> also confirmed that Gannon has passed away. His age is unknown as is the cause of death, which has not been made available to the public yet.<\/p>\n https:\/\/twitter.com\/BigMarcel24\/status\/1436718399736930308<\/p>\n One time UFC veteran Sean “The Cannon” Gannon has passed away. Gannon was a former Boston Police Departments Police Officer. He was also known for being the first man to ever stop Kimbo Slice in a streetfight. R.I.P. Sean Gannon.<\/em><\/p>\n Gannon (2-2) first competed for the Mass Destruction MMA promotion in 2003, where he went 3-0 as an amateur before turning pro at the end of the year. Gannon lost his first pro-MMA fight by submission but he was able to pick up two TKO wins in 2004. He was signed by the UFC in 2005 but lost his only fight in the promotion to Brandon Lee Hinkle at UFC 55. However, Gannon is most fondly remembered for his wild street fight with Slice.<\/p>\n