Multiple bombings rocked the Arab world's richest country Monday, as violence against innocent Muslims continues to mar the holy Islamic month of Ramadan.
State-linked Saudi news websites say an explosion has gone off outside one of Islam's holiest sites in the city of Medina, the same day that two suicide bombers struck different cities in Saudi Arabia.
State-linked Saudi news websites, quoting unnamed security officials, say the explosion in Medina was caused by a suicide bomber.
Sabq reported that the suicide bomber detonated his vest near a security building outside the sprawling mosque where the Prophet Muhammad is buried, one of Islam's holiest sites. The area was packed with pilgrims for prayer during the final days of the Muslim holy month of Ramadan.
Qari Ziyaad Patel, 36, from Johannesburg, South Africa, was at the mosque when he heard a blast just as the call to sunset prayers was ending and people were breaking their fast. Many at first thought it was the sound of traditional, celebratory cannon fire, but then he felt the ground shake.
He says "the vibrations were very strong... it sounded like a building imploded."
The sprawling mosque where the Prophet Muhammad is buried is visited by millions of Muslims from around the world each year during pilgrimages to Mecca. The area would have been teeming with pilgrims for prayer during the final days of the Muslim holy month of Ramadan, which ends this week.
The Interior Ministry could not be immediately reached for comment.
A resident in the largely Shiite eastern Saudi Arabian region of Qatif says a suicide bomber and a car bomb have struck a neighborhood there, but that no injuries were immediately reported.
Mohammed al-Nimr told The Associated Press the bomber detonated his suicide vest Monday evening when most residents of the neighborhood were at home breaking the Ramadan fast.
Qatif is heavily populated by Shiites, who are a minority in the Sunni-ruled kingdom. Al-Nimr says that near the body of a suicide bomber was a car bomb that also went off around the same time.
The attacks struck next to a Shiite mosque. The Islamic State of Iraq an Syria (ISIS) has in the past attacked Shiite places of worship in Qatif.
Another suicide bomber carried out an attack early on Monday near a U.S. diplomatic site in the western Saudi city of Jiddah, according to the Interior Ministry.
The ministry said the attacker detonated his suicide vest when security guards approached him near the parking lot of a hospital. The attacker died and two security men were wounded with minor injuries, according to the ministry statement, which was published by the state-run Saudi Press Agency. Some cars in the parking lot were damaged.
Interior Ministry spokesman Maj. Gen. Mansour al-Turki was quoted in the statement as saying the attacker caught the attention of the security guards, who noticed he was acting suspiciously at an intersection located on the corner of the heavily fortified U.S. Consulate in Jiddah, located by the Dr. Soliman Fakeeh Hospital. Most of the consulate's staff had reportedly moved offices to a new location.
The U.S. Embassy in Saudi Arabia confirmed there were no casualties or injuries among the consular staff. The embassy said it remains in contact with Saudi authorities as they investigate the attack.
No one immediately claimed responsibility for attack.
The Interior Ministry did not specify if it there are indications the bomber intended to target the U.S. diplomatic compound, saying an investigation was underway to determine his identity.
A 2004 al Qaeda-linked militant attack on the U.S. Consulate in Jiddah killed five locally hired consular employees and four gunmen. The three-hour battle on the compound came amid a wave of al Qaeda attacks targeting Westerners and Saudi security posts.
More recently, Saudi Arabia has been a target of ISIS attacks that have killed dozens of people. The extremist Sunni group views the Western-allied Saudi monarchy and government as heretics. Saudi Arabia is part of the U.S.-led coalition fighting ISIS in Iraq and Syria.
In June, the Interior Ministry reported 26 terror attacks had taken place in the kingdom in the last two years. Local affiliates of the ISIS group have targeted minority Shiites and security officials.
Monday's attack comes just days before the end of the holy month of Ramadan, during which observant Muslims fast daily from dawn to dusk.
The U.S. Embassy regularly issues advisory messages for U.S. citizens in Saudi Arabia. In a message issued Sunday and another one issued after the attack Monday, the embassy urged Americans to "remain aware of their surroundings, and take extra precautions when travelling throughout the country." It also advised citizens to "carefully consider the risks of traveling to Saudi Arabia."