A report released Friday by NFL investigator Ted Wells indicates Jonathan Martin was subjected to "a pattern of harassment" that included racial slurs and vicious sexual taunts about his mother and sister by three teammates.

The 144-page report said Richie Incognito, who was suspended by the Dolphins in November, and fellow offensive linemen John Jerry and Mike Pouncey harassed Martin. Another offensive lineman and an assistant trainer also routinely came under attack. Neither was named in the report.

Stephen Ross recently said he doesn't expect either player to return to Miami next season. Incognito is an unrestricted free agent and Martin has two years left on his contract. Martin likely will be traded or released.

Martin told investigators Incognito joked that he and other teammates would rape Martin's sister, a medical student none of them had ever met. Incognito also used racial slurs with Martin, made jokes about slavery and routinely demeaned Martin for not being "black enough."

The report said Pouncey and Jerry followed Incognito's lead.

"To a great extent, Incognito dictated the culture," the report said. "We doubt that matters would have gotten so out of hand had Incognito not set a tone on the offensive line that made extremely vulgar taunting a typical form of communication."