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.