GRAND JUNCTION, Colo. — A Clifton, Colo., woman was jailed Wednesday on suspicion she had her grandchildren perform sexually explicit acts while a man she met on the Internet watched.

The 49-year-old woman was arrested Tuesday on charges including child abuse and sexual assault on a child. No bond had been set. The Associated Press was not naming the woman because it could provide information that would identify the victims.

Her arrest stemmed from an Immigrations and Customs Enforcement roundup linked to Matthew Hughes, 26, who was arrested in December on Internet child pornography charges in Canada.

Internet chat messages indicated Hughes and the grandmother communicated with each other. Investigators traced the woman through her screen name, according to an arrest affidavit.

The woman allegedly told investigators she had her granddaughters touch her at the request of a man who watched via a Web camera, the affidavidt said.

The woman, who is married, told Mesa County sheriff’s investigators that she occasionally watches the children when their mother is away.

Investigators who visited her home this week said five children under the age of 15 were at the home, which had feces on the floor and moldy food in almost every room, according to the affidavit.