A Saudi Arabian prince arrested last week after a bloody woman alleging sexual assault attempted to climb the fence of a mansion near Beverly Hills may be in the wind -- but if he is, he better lay low if he wants to avoid returning to the U.S. for trial.

Majed Abdulaziz al-Saud, 29, is due in court Oct. 19 to face a felony charge of forced oral copulation, and possibly a raft of other charges relating to the alleged assault and to claims made by four other people who say he victimized them.

Neighbors have been quoted saying they believe al-Saud fled after posting $300,000 bail Thursday.

If he did flee, the prince may be safe in Saudi Arabia, an absolute monarchy with which the U.S. has no extradition treaty.

But if al-Saud travels with abandon while avoiding charges, he would risk being arrested and forcibly returned to the U.S. by almost all major Western countries and many others peppered around the world.

“When someone is subject to a U.S. prosecution [and hopes to avoid trial] it would be foolhardy to travel beyond the confines of their protected country,” says attorney Theodore Simon, an expert on international criminal law who has defended people fighting extradition to the U.S.

Simon says that if al-Saud fled, the Justice Department would have to request a provisional arrest in any country he visits with an extradition treaty. Even countries that do not have extradition treaties with the U.S. might detain and expel him into the arms of the U.S., says Simon, a past president of the National Association of Criminal Defense Lawyers.

Despite his royal family name, al-Saud likely won’t get a free pass for his alleged crimes due to diplomatic immunity.

State Department spokeswoman Katy Bondy tells U.S. News “the department does not currently have any information indicating that the individual in question enjoys immunity.”

The Los Angeles district attorney's office has not yet finalized the case against al-Saud, pending further investigation, so it's not clear exactly what charges he may face at the October hearing.

Detective Mark Fassam of the LAPD says he believes there's sufficient evidence to bring several felony and misdemeanor charges.

"It's definitely a file-able case," Fassam says. "There are five victims of varying degrees of seriousness."

Fassam declined to comment on reports that the prince has fled, and says his focus is making sure charges are filed. He says physical evidence and information from alleged victims is strong.

"A lot of information is already out about this case from the neighbors," he says. "At this time, my focus is more on not his whereabouts, but on getting charges filed with the district attorney."

Fassam says not all of the five accusers are alleging sex crimes, but he declined to elaborate further.

Officer Drake Madison, a police spokesman, echoed Fassam, saying reports of five victims "gives the impression that this person now has five victims of forced oral copulation or sexual assault and that’s not always how it works."

Madison says that he’s unaware of any measures taken to ensure that al-Saud does not flee the country.

A civil lawsuit filed by three unnamed women last week says the prince attacked them over a three-day period preceding his arrest. Simon says the civil lawsuit against al-Saud could proceed even in his absence, if he is properly served.

Al-Saud originally was detained Sept. 23 on suspicion of sexual assault, false imprisonment and battery. Neighbors told the Daily Mail it appears he moved soon after his release the next day.

Though the case has attracted significant attention, it’s unclear exactly what the alleged predator looks like. There’s no publicly available booking photo. A picture posted to social media shows a man who may be the prince, but there’s no confirmation.

The Los Angeles Police Department has no immediate plans to release the booking photo of al-Saud, in keeping with standard department policy that allows dissemination only if it serves a purpose like helping with an investigation or protecting public safety.

Fassam, who is working the case, says people have not come forward alleging more misconduct by al-Saud. "This looks like it was something that went out of control and people obviously got violated," he says. "It doesn't sound like it's a common occurrence with him."