The former chief of staff to the Lawrence mayor has pleaded guilty to transporting and possessing child sexual abuse material.

Jhovanny Martes-Rosario, 50, pleaded guilty in Boston federal court to one count of transportation of child pornography and one count of possession of child pornography, according to the Massachusetts U.S. Attorney’s Office.

Martes-Rosario was indicted by a federal grand jury last year.

Police in February 2023 had identified him as the likely user of Yahoo and Apple accounts containing child pornography.

Law enforcement officers searched Martes-Rosario’s residence, and an iPad device was seized with child pornography files, according to the feds.

Martes-Rosario admitted that he was the owner of the email addresses and that he searched for and downloaded child pornography to his personal iPad — and later sent it to his email address for storage. He also admitted he had been searching for and storing child pornography for years, the feds said.

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U.S. District Court Chief Judge F. Dennis Saylor IV scheduled Martes-Rosario’s sentencing for March 10.

The charge of transportation of child pornography has a mandatory minimum sentence of five years and up to 20 years in prison, a mandatory minimum of five years and up to a lifetime of supervised release, and a fine of up to $250,000.

The charge of possession of child pornography can lead to a sentence of up to 20 years in prison, at least five years and up to a lifetime of supervised release, and a fine of up to $250,000.

Sentences are imposed by a federal district court judge based upon the U.S. Sentencing Guidelines and statutes that govern the determination of a sentence in a criminal case.