Motley Crue bassist Nikki Sixx has revealed that his mother, Deana Richards, passed away yesterday (June 8, 2013).

Sixx's simple tweet, "RIP Mom 5-5 1939 to 6-8 2013," unleashed an outpouring of support and condolences from his fans both on Twitter and on his Facebook page.

From an early age, Sixx -- born Frank Carlton Serafino Feranna, Jr. -- was raised primarily by his mother and grandparents after his father left the family. No further information is known at this time about the circumstances of RIchards' passing. We would like to extend our sorrow and thoughts to Sixx and his family at this difficult time.

In a seemingly related Facebook post from yesterday, Sixx writes about pain, loss and inspiration: