A Chicago man accused of helping his then-girlfriend kill her mother during a vacation in Indonesia has pleaded not guilty to federal charges in the United States. Tommy Schaefer was sentenced to 18 years in prison in Indonesia in connection with the murder of Chicago socialite Sheila von Weise-Mack in Bali in 2014. Schaefer was released from prison in Indonesia on Tuesday and flown back to Chicago, where he faces charges of conspiring to kill someone in a foreign country, conspiracy to commit murder and tampering with a victim. Court records show he entered not guilty pleas to all three counts Thursday.