Disturbing story out of Mexico involves naked pics, a knife and two 16-year-old girls.

Anel Baez, 16 was allegedly stabbed to death by her best friend Erandy Elizabeth Gutierrez over naked pics posted online.

Here's the sad part: Baez had invited Erandy over to her home on March 19th to settle an apparent feud the two had. When Erandy arrived she went to use the restroom, distracting Baez, grabbed a kitchen knife, and stabbed her 'friend' 65 times. 65 times!

Police say people had seen Baez publicly grieving days after the stabbing. First degree murder charges are expected with Baez admitting to the murder.