Rappler CEO and Executive Editor Maria Ressa talks to reporters after posting bail at the Pasig Regional Trial Court, metropolitan Manila, Philippines on Friday March 29, 2019. The head of a Philippine online news site, among media agencies deemed critical of Philippine President Rodrigo Duterte, was arrested again Friday, this time over an alleged investment violation. (AP Photo/Aaron Favila)

MANILA, Philippines (AP) — The head of a Philippine online news site that has been critical of President Rodrigo Duterte was arrested Friday for the second time in two months, this time over a ban on foreign ownership of news media.

Police served an arrest warrant to Rappler Inc. CEO and executive editor Maria Ressa after she arrived at Manila's airport, and she later posted bail at a regional trial court.

Ressa's co-defendants had posted bail for the new charge earlier in the week. Ressa, who was one of Time magazine's Persons of the Year last year, was returning from a trip to the U.S. after securing a travel bond allowing her to leave the country while other criminal cases against her are pending.

"Every action takes us farther into a descent into tyranny," Ressa told reporters outside the court in suburban Pasig city. "This is the weaponization of the law."

Ressa and some media watchdogs said the latest government move was an attempt to muzzle independent media and other critics of Duterte, particularly over his deadly crackdown against illegal drugs.

The Duterte administration has denied her cases are a press freedom issue, saying she and Rappler have breached laws and should answer before the judicial system like other violators.

The charges stem from a complaint by the National Bureau of Investigation that Rappler allowed a foreign investor, U.S.-based Omidyar Network, to inject funds in the media organization.

The Philippine Constitution bans foreign ownership of news media, but Rappler has argued that it did not grant Omidyar the power to control or influence its news operations.

The country's Securities and Exchange Commission has revoked the site's license over what it ruled was a breach of the ban on foreign ownership and control of media outlets. Ressa is facing separate complaints for allegedly violating tax laws in connection with the foreign funds that Rappler received.

Omidyar has since donated its investment in Rappler to its key editors and staff, so an appeals court has ordered the SEC to examine if that warrants a reassessment of the license revocation.

Omidyar, established by eBay founder Pierre Omidyar, calls itself a "philanthropic investment firm" which supports entrepreneurs and their visionary ideas to create opportunities for people to improve their lives and communities.

Rappler is one of several local and international news agencies deemed critical of Duterte's policies. Since taking office in 2016, Duterte has openly lambasted journalists who write unfavorable stories about him. He has particularly bristled at critical coverage of his anti-drug campaign, which has left thousands of mostly poor suspects dead and drawn international condemnation.

Ressa was arrested last month and freed on bail in a libel complaint filed by a businessman who accused Rappler of linking him to illegal drugs, human trafficking and murder in a report without getting his side.

In its selection of Ressa as a Person of the Year, Time magazine cited her and several other journalists as "guardians" in what it said was an effort to emphasize the importance of reporters' work in an increasingly hostile world.

Ressa, who has worked with CNN, also last year received a Press Freedom award from the New York-based Committee to Protect Journalists, and the International Center for Journalists' Knight International Journalism Award.

Rappler CEO and Executive Editor Maria Ressa, center, gestures as she talks to reporters after posting bail at the Pasig Regional Trial Court, metropolitan Manila, Philippines on Friday March 29, 2019. The head of a Philippine online news site, among media agencies deemed critical of Philippine President Rodrigo Duterte, was arrested again Friday, this time over an alleged investment violation. (AP Photo/Aaron Favila)
Rappler CEO and Executive Editor Maria Ressa is recorded on a smartphone as she talks to reporters after posting bail at the Pasig Regional Trial Court, metropolitan Manila, Philippines on Friday March 29, 2019. The head of a Philippine online news site, among media agencies deemed critical of Philippine President Rodrigo Duterte, was arrested again Friday, this time over an alleged investment violation. (AP Photo/Aaron Favila)
Rappler CEO and Executive Editor Maria Ressa talks to reporters after posting bail at the Pasig Regional Trial Court, metropolitan Manila, Philippines on Friday March 29, 2019. The head of a Philippine online news site, among media agencies deemed critical of Philippine President Rodrigo Duterte, was arrested again Friday, this time over an alleged investment violation. (AP Photo/Aaron Favila)
In this photo released by Rappler, Rappler CEO and Executive Editor Maria Ressa, second left, is escorted by police after being arrested upon her arrival at Manila’s International Airport, Philippines Friday March 29, 2019. The Philippine online news site critical of President Rodrigo Duterte says its CEO has been arrested again, this time over an alleged investment violation. Rappler Inc. says Ressa was served a warrant and taken to court to post bail.  (Leanne Jazul/Rappler via AP)
Rappler CEO and Executive Editor Maria Ressa, right, is chased by reporters after posting bail at the Pasig Regional Trial Court, metropolitan Manila, Philippines on Friday March 29, 2019. The head of a Philippine online news site, among media agencies deemed critical of Philippine President Rodrigo Duterte, was arrested again Friday, this time over an alleged investment violation. (AP Photo/Aaron Favila)