"Israeli rocket strikes Gaza media building, wounding two," press tv said in a breaking news headline, after initially reporting no casualties in the incident.
"Israeli forces have targeted press tv and al-Alam television stations in the Gaza Strip," the English-language satellite station said. Al-Alam is Iran's Arab-language television station.
Equipment, including satellite transmission devices installed on the roof, was damaged, press tv said on its website. It did not identify the wounded or say if other media outlets were based in the same building.
A press tv news presenter said Israel knew the building's coordinates and had given assurances it would not be attacked. Its website said staff had kept light projectors working on the roof of the building to mark it.
Iran has condemned Israel's 15-day-old offensive against Gaza, and is running intensive diplomatic efforts to end the ongoing genocide in the Palestinian coastal area.
Israeli forces had also earlier arrested Iran's Al-Alam News Network's correspondent reporting from the occupied Palestinian territory.
Khadr Shahine, who reported for Iran's state-owned Arabic language Al-Alam television station, was arrested by Israel on charges that he had violated the censorship rules when he reported the beginning of Israel's ground offensive against the Gaza Strip before it was permitted by military censors.
Shahine turned himself in Tuesday after hearing police wanted to question him, his lawyer said.
Shahine's lawyer, Mohammed Dakhleh, said his client was being held on suspicion of passing confidential information to unauthorized persons.
"This is a very harsh security offense," he said, adding that it was the first time it had been used against a journalist.
Dakhleh said Shahine has long worked as a journalist, including during the 2006 war between Israel and Hezbollah in Lebanon.
"It's basically persecution because the guy has been giving TV items for years now," Dakhleh said.
Israel's military censor has broad powers to shut down media outlets or imprison journalists to prevent the release of information deemed threatening to the Zionist regime's security.
"A guy who supplies information for Iranian television is being questioned by police for suspected censorship violation," said Daniel Seaman, the head of Israel's Government Press Office.