A Texas man accused of kidnapping a 10-month-old girl at a New Mexico park after fatally shooting her mother and another woman had previously threatened to “start killing people and children,” according to federal investigators.

A federal criminal complaint against Alek Isaiah Collins alleged that he called the FBI twice last year and made threatening statements, leading to a mental health evaluation.

As a result of the evaluation, Collins was prohibited from purchasing a firearm in Texas, the complaint said. An alert was also put in place that would notify law enforcement if Collins tried to buy a gun.

Collins was arrested on May 6 in Abilene, Texas, in connection with a murder and kidnapping at Ned Houk Park near Clovis, New Mexico.

Authorities found the bodies of Samantha Cisneros and Taryn Allen lying on the ground near a silver Dodge minivan at the park on May 3. Cisneros’ 5-year-old daughter was found suffering from a gunshot wound to her head and taken to the hospital.

Items belonging to a baby, including a stroller and bottle, were found at the scene. Police determined that Cisneros’ 10-month-old daughter, Eleia Maria Torres, was missing, sparking an Amber Alert.

The baby was found safe days later with Collins in Abilene, according to authorities.

A federal criminal complaint charged Collins with interstate kidnapping of a child, the U.S. Attorney’s Office for the District of New Mexico said in a news release on Tuesday. He also faces state charges of first-degree murder, child abuse and kidnapping.

According to federal investigators, Collins allegedly called the FBI twice in 2023 demanding assistance in locating his missing 5-year-old daughter. It’s not clear if Collins has a child.

During one phone call in September, Collins allegedly made “threatening statements,” prompting the FBI to contact the Brazoria County Sheriff’s Office in Texas. Deputies brought Collins in for a mental health evaluation, according to the complaint.

NBC News reached out to the sheriff’s office for comment.

The following month, he allegedly called the FBI again and “reported that if law enforcement did not assist him with locating his missing five-year-old daughter, he would ‘start killing people and children,'” the complaint said. He also allegedly stated that he had kidnapped a woman and her son in an attempt to “pressure law enforcement to assist with locating his daughter,” the complaint stated.

The FBI again alerted law enforcement in Texas but they could not get in contact with Collins. Federal investigators said that during the second call, Collins appeared to be intoxicated and could not provide the name of his alleged daughter or the name of the child’s mother.

During law enforcement interviews with Collins, he allegedly said that he did not possess any weapons and said he did not intend to harm anyone. He allegedly claimed he made the statements “so that he could obtain help locating his daughter,” according to the complaint.

An attorney for Collins did not immediately respond to a request for comment on Wednesday.

The complaint also provided more details about the May 3 incident. Federal investigators said Cisneros and Allen, both 23, had been shot multiple times and it appeared that Cisneros had been struck by a vehicle.

“Her body had wounds to her lower legs and abrasions on her back indicative of being struck/dragged by a vehicle,” the complaint said.

The cover of a side-view mirror from a maroon vehicle was also found at the scene along with the baby items, according to federal investigators.

The complaint said that Collins had rented a maroon Honda in Texas before the shootings. GPS data from the car showed the vehicle traveling from Houston to Clovis, and surveillance video placed the car in the vicinity of the park less than an hour before the killings, according to the complaint.

A witness told police that it appeared that the driver of the maroon car was communicating with the driver of the van, the complaint said.

Following the shooting, the GPS data showed the vehicle traveling at a high rate of speed from Clovis to a residence in Abilene, where it remained until May 6.

The owner of the vehicle told authorities that Collins had failed to return the car on time so the owner reported it stolen and remotely disabled it.

Officers were preparing to serve a search warrant at the residence when they saw Collins exit the home carrying a baby and get into an Uber, according to the complaint. Investigators said Collins then forced the Uber driver out of the vehicle at gunpoint and drove away. Officers “pursued and pinned” the vehicle and took Collins into custody.

A motive for the shootings and kidnapping remains unclear. Authorities have said they do not believe Collins was related to any of the victims.

This article was originally published on NBCNews.com