A bureau chief for the county district attorney is the new undersheriff, Suffolk County Sheriff Vincent DeMarco said Friday.

Steve Kuehhas, East End bureau chief for the Suffolk County district attorney’s office, will be second in command at the sheriff’s office starting this month, DeMarco said in a news release.

In his new position, Kuehhas will provide direct oversight of managerial and senior supervisory law enforcement personnel, under the overall supervision of the sheriff, and oversee the internal affairs bureau, internal security unit, gang intelligence unit and the criminal investigations bureau, the release said.

“Steve is an attorney with nearly 30 years of experience in law enforcement, complex investigations and supervision,” DeMarco said in a statement.

DeMarco also called Kuehhas “well respected throughout the county” and said he has worked closely with the sheriff’s office for many years.

“These are the qualities that I sought when I began the vetting process for a new undersheriff, and I am certain that he will do an exceptional job for the Sheriff’s Office and the county’s residents,” DeMarco said.

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As the East End bureau chief since 2005, Kuehhas has been responsible for overseeing all criminal prosecutions for Suffolk’s five East End towns, according to the news release.

He also is an adjunct professor in criminal justice at Suffolk Community College and was awarded the SUNY Chancellor’s Award for Excellence in Adjunct Teaching in 2015.

Kuehhas, saying he looked forward to the new chapter in his career, praised DeMarco for instilling a “culture of integrity, professionalism and agencywide accountability” into the sheriff’s office.