BOSTON (AP) — A Marlborough man authorities say scammed airlines out of tens of thousands of dollars by submitting false lost luggage claims has pleaded guilty.

Pedro Igor Duarte pleaded guilty in U.S. District Court last week to three counts of mail fraud.

He is scheduled to be sentenced Dec. 6, when he faces up to 20 years in prison and full repayment.

Prosecutors say the 28-year-old Duarte bought tickets from several different airlines between October 2007 and April 2009, then filed lost luggage claims, even though none of his bags had actually gone missing.

Duarte varied the spelling of his name on baggage claims and used different addresses to hide his multiple claims. Authorities say the scam netted him more than $28,000.