Parents of suspected serial killer face contempt of court hearing

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Howell Donaldson III is accused of killing four people in the Seminole Heights neighborhood. (CNN Newsource)

There is a hearing Thursday to determine whether the parents of the suspect in the Tampa serial killings should go to jail for contempt of court.

According to CBS affiliate WTSP in Tampa, the parents of Howell Donaldson III received a subpoena from investigators. The State Attorney's Office said the parents are refusing to answer questions about their son. Prosecutors filed a motion to "show cause" so the parents "can have the opportunity to explain why they declined to answer questions in front of the judge," State Attorney Andrew Warren said in an interview with WTSP.

Donaldson is accused of killing Benjamin Mitchell, Monica Hoffa, Anthony Naiboa and Ronald Felton between October 19 and November 14. Police arrested Donaldson at a McDonald's in Ybor City last week.

The attorney for the family told WTSP they will not testify against their son.