YOAKUM, Texas -

A 20-year-old man is accused of posting nude pictures of a girl online in an attempt to seek revenge against her and her family.

Alexander Flores was arrested Friday on charges of online impersonation and promoting child pornography.

An arrest warrant affidavit stated that the charges stem from an investigation that the Yoakum Police Department began in August 2012.

It stated that a relative of the underage girl went to them with concerns after seeing nude pictures of the girl that had been posted online.

Investigators said they found that she had been involved in an online relationship with someone whose Facebook account bore the name “MixMasterLex,” the affidavit stated.

Yoakum police called upon the Texas Rangers for help with the investigation, and found one nude picture of the girl posted to that Facebook account, the affidavit stated.

Investigators said they also discovered another Facebook account that used a variation of the girl’s name and contained more than 100 nude pictures of her, the affidavit stated.

Investigators said they traced both Facebook accounts to Flores.

They said they also heard Flores, in a telephone conversation with the girl’s relative, confess to posting the nude pictures, the affidavit stated.

Flores reportedly told that family member he did it for revenge because he was upset that they made him end his online relationship with the girl, the affidavit stated.

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