Police in suburban Dallas say a 45-year-old man has been charged with murder after posting a photo on social media showing his girlfriend's lifeless body.

Kenneth Alan Amyx was being held Tuesday at the Collin County jail. Police say they forced their way into a Plano apartment after being called Sunday by the sister of 43-year-old Jennifer Lee Spears.

Officers found Spears dead from knife wounds and Amyx bleeding from superficial wounds that appeared self-inflicted.

Police spokesman David Tilley said investigators don't have a motive.

Amyx took a photo of himself, bloodied, that included Spears' body and posted it on Facebook. Tilley says the post was obtained as evidence and the image has since been removed.

Online jail records did not indicate an attorney who could speak for Amyx.