Authorities have identified Robert Dorgan, who also went by the name Roberta Esposito, as the suspect in Monday’s shooting at Dennis M. Lynch Arena in Pawtucket, Rhode Island. The attack left three people dead, including Dorgan, and three others in critical condition.

Police received reports of an active shooter at approximately 2:30 p.m. on Monday and arrived at the arena within 90 seconds. Investigators said Dorgan entered the arena during a senior night hockey game for a family member before opening fire.

Pawtucket Police Chief Tina Goncalves described the shooting as targeted, stemming from a family dispute. A video circulating on social media shows Dorgan’s daughter leaving a police station, stating that her father “shot my family” and “he’s dead now,” and adding that he “has mental health issues” and “was very sick.”

Court records from 2020 indicate Dorgan underwent gender reassignment surgery. Around the same time, Dorgan reported to North Providence Police that his father-in-law wanted him removed from the family home, and his wife filed for divorce, initially citing “gender reassignment surgery, narcissistic + personality disorder traits,” later changing the reason to “irreconcilable differences.”

Officials have not released the names of all victims while notifying families. Law enforcement sources indicated the shooting was a murder-suicide, with Dorgan killing his wife and shooting two of his children before taking his own life.