Eds: APNewsNow. Updates with bond set at $1 million, suspect’s mother saying her daughter is innocent. With AP Photos.

BELLEFONTAINE, Ohio (AP) — A judge has set a $1 million bond for an Ohio woman accused of killing her three sons because authorities say she was jealous of the attention her husband paid them.

Brittany Pilkington appeared briefly Thursday in Bellefontaine (behl-FOWN’-tihn) Municipal Court but didn’t speak. She wasn’t required to enter a plea.

Investigators say the 23-year-old smothered two sons, one in July 2014 and the other on April 6. Authorities took custody of her third son after he was born three months ago, but a judge allowed him to be returned home because there wasn’t conclusive evidence the first two boys had been killed. The third son died Tuesday.

Lori Cummins, Pilkington’s mother, says she believes her daughter is innocent. Although authorities say Pilkington confessed, Cummins says her daughter told her in a jailhouse call she didn’t do it.

This photo provided by the Logan County Jail shows Brittany Pilkington, who calmly called 911 to report her baby son wasn’t breathing on Tuesday, Aug. 18, 2015, and then hours later confessed to killing him and her two other young sons over the past several months, police said. Pilkington was charged with three counts of murder and was jailed Tuesday, said police in Bellefontaine, Ohio. (Logan County Jail via AP)

http://aimmedianetwork.com/wp-content/uploads/sites/47/2015/08/web1_105334069-0b020528e050446db9c4c4c5dad2b75d.jpgThis photo provided by the Logan County Jail shows Brittany Pilkington, who calmly called 911 to report her baby son wasn’t breathing on Tuesday, Aug. 18, 2015, and then hours later confessed to killing him and her two other young sons over the past several months, police said. Pilkington was charged with three counts of murder and was jailed Tuesday, said police in Bellefontaine, Ohio. (Logan County Jail via AP)

In this Tuesday, Aug. 18, 2015, photo, Bellefontaine Police Chief Brandon Standley, front, and Lt. Rick Herring host a news conference, in Bellefontaine, Ohio, to announce charges against Brittany Pilkington. Pilkington was charged with three counts of murder and was jailed, after authorities said she confessed to killing her three young sons. (Reuben Mees/Bellefontaine Examiner via AP) MANDATORY CREDIT

http://aimmedianetwork.com/wp-content/uploads/sites/47/2015/08/web1_105334069-67de2160ff71444b87d54b698e14f9cb.jpgIn this Tuesday, Aug. 18, 2015, photo, Bellefontaine Police Chief Brandon Standley, front, and Lt. Rick Herring host a news conference, in Bellefontaine, Ohio, to announce charges against Brittany Pilkington. Pilkington was charged with three counts of murder and was jailed, after authorities said she confessed to killing her three young sons. (Reuben Mees/Bellefontaine Examiner via AP) MANDATORY CREDIT