Accused murderer marries prosecution’s key witness

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KANSAS CITY, Mo. -- A jailhouse wedding may silence the only witness to a triple murder.

Joseph Nelson is charged with murdering his ex-girlfriend Bianca Fletcher, their one-year old son Jojo, and Fletcher's new boyfriend Shannon Rollins.

They were killed last September in Kansas City, Missouri.

Prosecutors say the only witness to the crime was Nelson's new girlfriend, Shellana Davis.

The two were married in December at the detention center where Nelson remains behind bars.

Missouri law gives spouses the right to avoid testifying against one another.

The mother of one victim wants to know why the couple was even allowed to have contact.

Prosecutors say the marriage is a "sham."

The day after the wedding Davis was charged with burglary and tampering with evidence in the case.

She is now being held on $75,000 bail.

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