HAVANA, Cuba (AP) – The Cuban Government said Wednesday it is concerned about a jailed US 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 US 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.

“The Cuban Government reiterates its willingness to seek, together with the US Government, a solution to Mr Gross’ case… that takes into account the humanitarian concerns of Cuba related to the case of the three Cubans from the group of the Five,” her statement read.

The “Cuban Five” are intelligence agents sentenced to long prison terms in the United States. Two have completed their sentences, and three are still behind bars.

They were convicted on charges including conspiracy and failure to register as foreign agents, but Cuba calls them heroes who were trying to foil terror plots against the island by militant exile groups.

In the past, US officials have ruled out swapping the Cubans for Gross and said the cases are not comparable.

Gross was arrested in December 2009 after he was caught setting up Internet networks for Cuba’s small Jewish community as part of a programme funded by the United States Agency for International Development (USAID).

Cuba considers such programme an affront to its sovereignty and sentenced him to 15 years for crimes against the State. He maintained that his activities never posed any threat to the Cuban Government.

On Tuesday, Gross’ US lawyer, Scott Gilbert, said his client had eaten his last solid meal the night of April 2, though he continues to drink water. He said Gross intended to maintain the hunger strike “as long as it takes”.

“I am fasting to object to mistruths, deceptions, and inaction by both governments, not only regarding their shared responsibility for my arbitrary detention, but also because of the lack of any reasonable or valid effort to resolve this shameful ordeal,” Gross said in a statement released through the lawyer.

His protest followed an AP investigation that revealed a separate USAID programme to secretly create a text messaging-based social network in Cuba with the goal of stirring unrest. The network, called ZunZuneo, was publicly launched shortly after Gross’ arrest.

Gilbert called it the “final straw” that prompted Gross’ hunger strike.

Vidal’s brief statement did not offer any details about the strike, saying simply that officials “have learned with concern” about Gross’ protest.

She reiterated Havana’s assertion that Gross broke Cuban law by implementing a subversive programme financed by the US Government.