A Wisconsin woman is accused of allowing men to sexually assault her two children, between ages 6 and 9, in exchange for methamphetamine, cocaine and money, reports said Thursday.

The children were made to perform sex acts and pose naked for photos, an informant told police. The confidential informant told police the children would sometimes be injected with meth to keep them awake, reportedly over 100 times. The informant said the abuse had possibly been going on for as long as nine years, according to police.

The suspect, Michelle Mayer, 39, was reportedly present during the assaults and was paid in money, meth and cocaine. She reportedly beat the children with a baseball bat if they tried to fight back.

Mayer was charged with two counts of repeated sexual assault of a child, and being a party to a crime, WTMJ-TV reported.

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