MILWAUKEE (CBS 58) – A Milwaukee man accused of killing his girlfriend in 2013 will face a new charge during the murder trial later this month.

Kris Zocco is accused of killing Kelly Dwyer and hiding her body. This week, a new criminal complaint filed against Zocco states he tried to get a cellmate to intimidate or kill an ex-girlfriend who is expected to testify at the trial.

At a hearing on Friday, Zocco pleaded not guilty to the witness intimidation charge. Then, the judge decided the charge will be combined with the murder trial set for September 24.

On Friday, a detective testified on the witness intimidation charge, as he did, Zocco shook his head in disagreement.

Another hearing is scheduled for September 18 ahead of the trial on September 24.