HAVANA (AP) — The Cuban government said Wednesday it is concerned about a jailed U.S. government subcontractor’s hunger strike, which he began last week to protest both Havana’s and Washington’s handling of his case.

Josefina Vidal, the Cuban Foreign Ministry’s top official for U.S. affairs, said in a statement that Alan Gross, a 64-year-old from Maryland, is in good physical health. He has been serving his 15-year sentence at a military hospital in Havana.