Neither claim could be independently verified.
Here is the latest news from the Middle East on Friday. Read our full coverage here.
Iran's official IRNA news agency quoted a statement by the Guard as saying the attack on the U.S. radar system followed a U.S. strike on a telecommunications pole in the southern Iranian port of Sirik.
Bahrain has been one of the strongest critics of Iran and is home to the U.S. Navy's 5th Fleet.
The statement said the attack on the radar was a serious warning to the U.S. to cease its strikes. It was Iran's first report of targeting a facility in Bahrain since September.
During an air war that began in February, Iran targeted U.S. bases in neighboring Arab nations including Bahrain in retaliation for U.S. strikes. Since then, Iran routinely targets oil tankers in the Strait of Hormuz, the critical waterway for international oil shipments.
U.S. Central Command and Bahrain's Ministry of Information did not immediately respond to requests for comment.
Iran's Revolutionary Guard said Friday that a liquefied petroleum gas tanker struck a mine, causing an explosion, while trying to sail through the Strait of Hormuz, according to the state-run IRNA news agency.
The Guard said the vessel ignored repeated warnings while transiting the eastern part of the strait. The claim could not be independently verified, and there was no immediate report of the incident from the United Kingdom Maritime Trade Operations, a British military agency that monitors incidents at sea.
Iran continues to warn ships not to pass through the strategic shipping lane without its approval.
More than 38 years after the Iran-Iraq war ended, the remains of hundreds of unidentified soldiers were carried through Iranian cities Friday in one of the largest such funerals in recent years.
In Tehran, thousands joined a procession for the remains of 110 soldiers. Funerals for another 240 were held in other cities.
Trucks carrying flag-draped coffins passed near Tehran University as mourners dressed in black crowded around them, many weeping. President Masoud Pezeshkian and senior officials, including acting Revolutionary Guard chief Gen. Mostafa Izadi, attended the event.
"Against the enemies, we are continuing the same as our martyrs did during the Iran-Iraq war," Izadi told reporters.