Iranian courts have sentenced one person to death for spying for the U.S. Central Intelligence Agency (CIA) and jailed two others for 10 years for the same crime, as well as imprisoning a fourth person for 10 years for spying for Britain, the Judiciary said on Tuesday. 

"One person has been sentenced to death for spying for America's intelligence service ... but the ruling has been appealed," judiciary spokesman Gholam Hossein Esmaeili was quoted as saying by the Judiciary's news website Mizan. 

The other two men, identified as Ali Nefriyeh and Mohammad Ali Babapour, received final 10-year sentences for spying for the CIA, and were ordered to repay 55,000 U.S. dollars they had received, he said. 

Mohammad Amin-Nasab was sentenced to 10 years in prison for spying for British intelligence, Esmaeili said. 

It was not immediately clear if any of the cases were linked to Iran's announcement in July that it captured 17 spies working for the CIA. 

Iran's Ministry of Intelligence said in July that the spies had been "employed in sensitive and vital private sector centers in the economic, nuclear, infrastructure, military and cyber areas... where they collected classified information." 

The latest verdicts come amid spiraling tensions between Tehran and the United States since President Donald Trump last year withdrew from Iran's 2015 nuclear deal with major powers and reimposed sanctions that have crippled Iran's economy in order to force Tehran to renegotiate the pact. 

(With input from Reuters)