Federal, state and local investigators continue their search for Christopher Francisquini, who faces murder charges in connection with the stabbing and dismemberment of his 11-month-old daughter in November.

Members of the Federal Bureau of Investigation and Naugatuck and New Haven Police Departments held a news conference Thursday morning to update the public on the search for Francisquini.

“Christopher, if you are listening, the search will not stop until we find you and that we bring you in,” FBI Special Agent Michael Butsch said. “However, you have the power to change this. You have the power to contact us and to speak with us and to turn yourself in. You can help us understand why this happened. It is your choice to make.”

The FBI has placed billboards advocating for Francisquini’s arrest on Interstates 84, 91 and 95, Butsch said. The agency increased its reward for information leading to the arrest of Francisquini from $10,000 to $25,000 on Tuesday.

“I think it demonstrates our commitment and the importance we place on finding Christopher. We’re kind of pulling out all the stops to locate him as soon as we can,” Butsch said.

Camilla Francisquini was found dead by a relative at a home on Millville Avenue in Naugatuck on Nov. 18. The Chief Medical Examiner’s Office declared her death a homicide and her cause of death as neck compressions and stab wounds.

Police believe she was killed earlier in the morning on Nov. 18. Francisquini and Camilla’s mother were involved in a dispute in Waterbury that morning, and police believe Camilla was killed beforehand. Francisquini removed a court-ordered GPS device and smashed his cellphone following the dispute, according to Naugatuck Police Chief Colin McAllister.

Police have not yet located Francisquini, who was last seen on Quinnipiac Street in New Haven on Nov. 18, according to McAllister.

Police received information about a suspected vehicle, a 2006 Chevrolet Impala owned by a family member, that Francisquini was reportedly driving. Police located the vehicle on I-91 in New Haven near Exit 8 on Nov. 18. The car was unoccupied, and Francisquini reportedly fled into the wooded area near where the car was found.

McAllister said police have received additional reports and information but did not confirm any more sightings.

Francisquini is wanted on an active arrest warrant charging him with murder with special circumstances and risk of injury to a minor. Butsch said Francisquini could be facing possible federal charges, but the agency is more focused on assisting local and state law enforcement currently.

McAllister warned the public against approaching Francisquini, who is considered armed and dangerous. He also said anyone potentially housing the suspect may not be safe physically and could face charges once he is located.

Investigators said it is possible he has changed his appearance to hide from law enforcement. The FBI shared images of Francisquini’s tattoos on social media to help the public recognize him.

Investigators are not ruling out that he has left the state and have included “multiple states” in their search, Butsch said Thursday.

McAllister said investigators are still looking for answers on what could have motivated the murder.

“I think I speak for our law enforcement partners here. This is probably one of the most heinous cases in our collective experiences that we’ve investigated.” said McAllister, who added that Naugatuck police are wearing “Justice for Camilla” bracelets with her birth and death date on the back.

Investigators are sifting through a “tremendous amount of information” from tips and leads submitted by the public, McAllister said. They are still seeking information on his whereabouts and anyone can contact the FBI at 1-800-225-5324 or Naugatuck police at 203-279-5221.