Mel B under criminal investigation for witness tamperingLondon, Sep 12 (AZINS) Singer Mel B has been accused of intimidating a witness who was prepared to testify against her in her bitter divorce battle with estranged husband Stephen Belafonte.

Police is now investigating the matter, reports tmz.com.

Rapper Siya filed a police report on Monday, claiming that Mel B sent her texts on September 9 threatening her if Siya dared testify against her, according to law enforcement sources.

According to the website, Siya showed police the text messages and a felony witness intimidation case was opened.

Siya was prepared to contradict Mel B and testify Belafonte never physically abused his wife. Siya claims she was a close friend of both Mel B and Belafonte.

As per a report in tmz.com, in addition to disputing Mel B's claims of abuse, Siya is prepared to testify Mel B frequently used illegal drugs.