Two of the four men who escaped Newark's Delaney Hall immigration detention center last week remain missing, the FBI says.

Two of the four detainees who escaped an immigration detention center in New Jersey are back in police custody, FBI Newark announced. According to authorities, Joel Enrique Sandoval-Lopez and Joan Sebastian Castaneda-Lozada have been found and arrested.

The Minnesota Bureau of Criminal Apprehension reports that Boelter was last seen on Saturday morning in Minneapolis, after the shootings, wearing a light-colored cowboy hat, a dark long-sleeve shirt, and light pants while carrying a dark cross-body bag.

Law enforcement officials are searching for 57-year-old Vance Luther Boelter in the shootings of two Minnesota lawmakers and their spouses early Saturday morning.

The FBI is offering a reward of up to $50,000 for information leading to the arrest of Vance Boelter, the suspect in the shootings of two Minnesota lawmakers and their spouses.