"Staff are working to restore the facility to normal operations," the statement said.
Many inmates have spent the weekend sitting in frigid, dark cells because of a partial power outage, according to Director of Federal Defenders of New York David Patton and representing the union representing the facility's workers.
The restoration of power comes after New York Gov. Andrew Cuomo called on the Department of Justice to immediately investigate the circumstances at the Metropolitan Detention Center in Brooklyn, where a power outage has left intact without heat or lighting the past few days.
" more than a thousand prisoners without heat, hot water or electricity at the Metropolitan Detention Center in Brooklyn, "Cuomo said in a statement.
He said the allegations are a violation of human decency and dignity for the inmates, and may be illegal.
"Prisoners in New York are human beings. Let's treat them that way," Cuomo said.
"The heat is sporadic and it's uneven," Nydia Velázquez told the station.
It was a trying situation for more than a day, Patton said. id.
"Lighting is down. No light in the cells. All locked down since Thursday night. That's going on for at least 36 hours. When the sun goes down it's pitch dark. Inmates who have medical conditions can read the instructions on the medications, "Patton said.
Protesters gathered outside the building on Saturday. Some carried signs with the words," Shut it down, "" Torture at the MDC, " and other sayings
Gabriel Pedreira, an organizer for the local branch of the American Federation of Government Employees, said they are concerned for the health and safety of the employees, who are being "forced to work in freezing temperatures." 1
Power outage came amid cold temperatures
Pedreira previously said federal prison officers are working while wearing hats, coats and scarves. e said the temperatures this week have been in the teens overnight. On Sunday, the low will be around 30 degrees and the high is expected to be in the lower 40s. The low Monday morning will be in the upper 30s.
Earlier, New York Mayor Bill de Blasio said on Twitter that the city was sending hundreds of blankets and hand warmers to the detention center and that generators will be made available.
"We've got the Federal Bureau of Prisons supplies," the mayor added.
The Bureau of Prisons said the facility had a four in the housing housing electrical switches and one of the two buildings had partial power outage. A building has been installed but needs to restore power.
The buildings have emergency lighting, spokeswoman Valery Logan said. She said it had hot water in their sinks and in showers.
Bob McGee, a spokesman for the power company Con Edison, said they were ready to reconnect with electricity once completed.
"It is unacceptable, illegal, and inhumane to detain people without basic amenities, access to counsel, or medical care, "New York Attorney General Letitia A. James said in a statement. "The reported conditions at the Metropolitan Detention Center are called" Prisoners and detainees have rights and those rights must be enforced. My office is in touch with legal service providers and inmates' attorneys, and closely monitoring this deeply disturbing situation. "
The facility houses 1,654 inmates. According to the BOP website, "facilities are institutions with special missions, such as the detention of pretrial offenders; the treatment of inmates with serious or chronic medical problems, or the containment of extremely dangerous, violent or escape prone data. . "
CNN's Deanna Hackney, Julia Jones, Elizabeth Joseph and Eric Levenson contributed to this report.