ICE said the operation targeted at-large criminal aliens, illegal re-entrants, immigration fugitives and other immigration violators.
Those arrested – 35 men and five women - were from 13 countries, including Jamaica, Cuba and the Dominican Republic.
The other countries were Brazil, Canada, Guatemala, Malawi, Mexico, Nigeria, Pakistan, Poland, Somalia and Latvia.
“This operation targeted public safety threats, such as convicted criminal aliens and gang members, and individuals who have violated the immigration laws of the United States – including those who re-entered the country after being deported and immigration fugitives ordered deported by federal immigration judges,” ICE noted in a statement.
ICE said of those arrested in central, western and northern New York State, almost 30 per cent had criminal convictions or pending criminal charges.
“ICE will continue to ensure that New York state will never be a safe haven for criminal aliens,” said Thomas Feeley, field office director for ICE Enforcement and Removal Operations (ERO) Buffalo, which covers the 48 county region.
ICE said other cases included individuals with convictions for serious offenses involving sexual assault, assault, driving under the influence, firearms possession, theft, neglect of a child, larceny, illegal re-entry into the U.S., contempt of court and statutory rape.
Seven of the individuals arrested were accepted for federal prosecution for re-entry after deportation, a felony punishable by up to 20 years in prison. Those not being criminally prosecuted will be processed for removal from the country.
ICE also said individuals who have outstanding orders of deportation, or who returned to the U.S. illegally after being deported, are subject to immediate removal from the country.