Transcripts of voice mail messages and text messages left for the Miami Dolphins' Jonathan Martin by teammate Richie Incognito indicate a pattern of racial epithets and profane language.

Multiple sources confirmed to ESPN that the following is a transcript of a voice message Incognito left for Martin in April 2013, a year after Martin was drafted: "Hey, wassup, you half n----- piece of s---. I saw you on Twitter, you been training 10 weeks. [I want to] s--- in your f---ing mouth. [I'm going to] slap your f---ing mouth. [I'm going to] slap your real mother across the face [laughter]. F--- you, you're still a rookie. I'll kill you."

Sources tell ESPN NFL Insider Adam Schefter that officials from both the NFL and the Dolphins have heard the tape and have copies of the message.

Read it at ESPN.