- A demonstration of about 300 people turned violent in Kabul, an official says
- Protesters injure 15 policemen and burn two police cars, the official says
- The leader of Hezbollah in Lebanon calls for renewed protests
- He says the film "represents a dangerous turn in the war on Islam"
Kabul, Afghanistan (CNN) -- Protesters outside the U.S. Embassy in Kabul, Afghanistan, attacked police officers in a violent demonstration over an anti-Islam film on Monday, raising the specter of a new round of protests that have rocked U.S. diplomatic missions from Libya to Pakistan.
The violent protest came as tensions remained high in the Muslim world, with American embassies and consulates on alert for further backlash over a privately produced video in the United States that mocked the Prophet Mohammed.
At least 15 policemen were injured and two police vehicles burned when a protest of about 300 Afghans near the embassy's security perimeter turned into a melee, a senior Afghan police official said on condition of anonymity because of the sensitivity of the situation.
The violence outside the U.S. Embassy in Afghanistan is the latest fallout from a 14-minute movie trailer posted online that mocks the Prophet Mohammed as a womanizer, child molester and ruthless killer.
It comes seven days after protests first erupted Tuesday in Egypt and Libya, and spread to more than 20 nations with sometimes violent results.
The Libya protest is believed to have been used as a diversion by militants in an attack on the U.S. Consulate in Benghazi that left Ambassador Chris Stevens and three other Americans dead.
The leader of Lebanon's Hezbollah movement, meanwhile, called for renewed protests Monday over the film.
Speaking on Hezbollah's al-Manar television service Sunday, Hassan Nasrallah said the movie -- excerpts of which have been posted online -- "represents a dangerous turn in the war against Islam and the great prophet, peace be upon him."
"The people who should be accountable, and brought to justice as well as punished and boycotted, are those directly responsible for the film and those who support them and protect them," Nasrallah said. "And it is the United States of America that is at the forefront of those."
The movie, "Innocence of Muslims," was privately produced by a man federal officials identified as Nakoula Basseley Nakoula, a California man on probation for bank fraud, and authorities have said they are reviewing whether he violated the terms of his release.
President Barack Obama has disavowed the film, saying the United States rejects "the denigration of any religion, including Islam." But he also said "there is no excuse for attacks on our embassies and consulates."
Notably, not all of the protests have been violent and represent only a small fraction of populations. In Pakistan, for example, a few hundred protesters Sunday clashed with police armed with batons and a water cannon near the U.S. Embassy in Karachi in a city of nearly 13 million people.
CNN's Chelsea J. Carter, Matt Smith and Greg Botelho contributed to this report.