Vicky Miller, 43, was indicted on June 13, 2012 along with her son and his friend for attempting to kill her ex-boyfriend in November 2011. (Credit: Collin County)

PLANO (CBSDFW.COM) – A grand jury passed down attempted murder indictments Wednesday to a Plano mother, her son and his friend for conspiring to kill her ex-boyfriend in November 2011.

According to the indictments, Plano officers were called to a home near Park Ln. and Jupiter Rd. on Nov. 21 and discovered an assault had taken place.

A man named Paul Key, who turned out to be Miller’s ex-boyfriend, was arrested initially and taken in for questioning.

Plano Police Department spokesman David Tilley said Miller told police at the scene that Key had assaulted them. When they got to the station, however, Key told investigators a different story.

“He gave us a totally different account of what actually took place,” Tilley said. “ He had come up with the information that these individuals were trying to kill him and had actually conspired to do so.”

Investigators began researching Key’s claim, Tilley said, and determined he was telling the truth. Plano police then secured warrants for Miller, her 17-year-old son Francisco Hurtado and his friend Dunkin Boyce, also 17.

They were all arrested on December 6, about two weeks after the initial incident.

On Wednesday, a grand jury indicted the three for attempted murder. Miller was also indicted for aggravated sexual assault of a child. Tilley said that crime to light during the attempted murder investigation.

“It was actually after the arrest was made that we started also getting information that we needed to look into Ms. Miller for other similar offenses,” he said.