Hezbollah leader Hassan Nasrallah on Saturday dismissed rumors he suffered a heart attack, saying he isn’t suffering from any health problems.

Earlier this week, rumors circulated on Arabic Internet sites that Nasrallah was admitted to a hospital in southern Beirut, a Hezbollah stronghold, after suffering from a stroke or heart attack.

“All reports in the media about my health are incorrect,” Nasrallah said in an address aired on Hezbollah’s al-Manar TV. He also called on people to “ignore those rumors because they’re part of psychological warfare” against Hezbollah.

“Life is in Allah’s hands, but I am not suffering from any health problems,” Nasrallah said.

Hezbollah troops have fought alongside President Bashar Assad’s army in combatting Syrian rebel groups. In recent weeks the Lebanese Shiite militia’s troops have waged a campaign against radical Sunni rebel groups in Syria’s Qalamoun region bordering Lebanon.

Earlier this week, Hezbollah fighters captured large areas and strategic hills. Some 3,000 militants are in the Qalamoun region, almost equally split between the Nusra Front and the Islamic State group, a Hezbollah commander recently said in Beirut. He said Hezbollah and Syrian troops surround the Qalamoun from the north, the east and the south, as well as part of the west, squeezing the Islamic militants who remain.

Concerning Hezbollah’s war against radical Sunni groups in Syria, Nasrallah said that the war perpetrated by the Nusra Front and Islamic State a “Nakba.”

The Arabic term Nakba — “catastrophe” — is typically used by Palestinians to refer to the 1948 Israeli War of Independence. The Palestinians, and Arabs throughout the Middle East, observe the Nakba on May 14 with marches and protests.

The Hezbollah leader said that the atrocities committed by radical Sunni groups threatens to “eclipse the Palestinian Nakba.”

He demanded that “the Israel and American conspiracy,” referring to the Islamic State, be held accountable for their crimes.

AP contributed to this report.