MIAMI, Fla. - Day four of testimony is underway in the murder trial of a Fort Myers man accused of killing NFL star Sean Taylor. Eric Rivera, Jr. is accused of gunning down the former Washington Redskins safety in his Miami-area home during a robbery in 2007.

The prosecution is expected to play a much-anticipated video today. In it, they say, Rivera gives a detailed confession to the murder. According to the Miami-Herald, the lead investigator in the case took the stand Thursday afternoon. He's expected to bring that confession in to evidence during his testimony.

Prosecutors say Rivera voluntarily confessed, but the defense is trying to prove that Rivera was forced to lie.

The 23-year-old and four other Lee County men are accused of breaking in to Taylor's Palmetto Bay home to steal cash. Prosecutors say they didn't expect him to be home, and when Taylor tried to defend himself, Rivera fired two shots, killing him.

Wednesday, a detective from the Fort Myers Police Department testified that Rivera's DNA was discovered on a letter sent to his cousin. In the letter, Rivera instructed him to persuade key witness, Areyale Boston, to lie. The Miami-Herald, reported part of that letter read, "The murder case is the hardest case to get someone on. They ain't got enough on me whatsoever. All they got is (my) statement."

Boston testified that Rivera also came to her house after committing the crime, asking her to lie to police.

Trust WINK News to follow the trial as it continues and bring you updates in our later newscasts and online.