Alyssa M. Chang was arrested last week and charged Monday
Credit: Courtesy Des Moines Police Department

A Washington State woman who allegedly abducted a 2-year-old boy and his mother was charged Monday with kidnapping and assault, prosecutors say.

Alyssa M. Chang was arrested last week after she allegedly kidnapped 2-year-old Ronnie Chan and his mother Van Dang with the assistance of the boy’s 65-year-old paternal grandmother, Vien Nguyen.

According to a police report obtained by PEOPLE, Dang told police she and her son were at their home in Des Moines when Chang, who was also dating Dang’s boyfriend (the father of Ronnie), allegedly shot her twice with a Taser as she opened the door.

Dang said that prior to the alleged abduction she received a message from an unidentified person calling her a “husband stealer” and referenced “the photo-shopping of an image containing [Dang’s boyfriend Khang Tran] and [Chang] in a compromising sexual position and distributing the image,” according to the report.

Chang and Nguyen then allegedly bound Dang’s hands behind her back and legs with plastic tie-straps and forced her and her son into the back of Chang’s blue Hyundai. As they were driving, Chang was stopped for a traffic infraction by police and told Dang that her son “would be thrown into the street if she spoke or cried out,” the report states. “Dang said her hands were tied behind her back and [Chang] placed a jacket over her torso to conceal that fact when she was stopped.”

Chang then drove them to her home where she tied Dang to a cupboard in the garage, according to the report.

Dang told police that after several hours, she was able to cut herself free and ran over to a neighbor’s house.

“From there she called a family member to pick her up, and that is when they called the police,” Des Moines Police Department Commander Barry Sellers tells PEOPLE.

An Amber Alert was issued for the boy Tuesday night. That same evening, Chang went to her brother’s house and asked him if he would watch her boyfriend’s son, according to KOMO News.

Chang allegedly told her brother John Truong that she and her boyfriend wanted to spend the night together alone and she would pick up the boy the following morning.

Truong told KOMO News that the boy had a relaxing evening watching movies and eating popcorn.

“He was a great kid. He didn’t cry much or anything. He enjoyed my dog’s company and my children’s company,” he said.

It wasn’t until the next morning that Truong realized the boy had been abducted.

“John Truong said he was looking at social media and saw the Amber Alert, which is what prompted him to call 911,” the report states.

Police picked up the boy just after 9 a.m.

“When we got there he was asleep,” Terri Vickers with the Renton Police Department tells PEOPLE. “He was happy and healthy.”

Chang was arrested and held on $250,000 bail for investigation of kidnapping, assault and unlawful imprisonment, King County Prosecuting Attorney’s Office spokesperson Dan Donohoe tells PEOPLE.

Nguyen denied to police she saw Dang and her son during the alleged kidnapping and told police Chang drove her to a casino and paid for a cab that came and picked her up.

“She could not tell us which casino she went to, but she did say she was sitting in the front seat when [Chang] was stopped by the police, and there was no one else in the vehicle,” the report states.

Sellers says Nguyen was arrested but was later released after being interviewed.

At a court hearing Monday, Chang was charged with two counts of kidnapping and one count of assault in the third-degree.

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