MANAGUA, Nicaragua (AP) — Nicaraguan police have arrested another opposition politician, bringing to six the number detained over the weekend in an unprecedented roundup of opponents of President Daniel Ortega.

Five were arrested Sunday, the biggest one-day roundup so far in Ortega’s campaign to jail anyone who might challenge his rule. The last arrest, which came late Sunday, was that of Victor Hugo Tinoco, the leader of the political movement Unamos.

Tinoco is a former assistant foreign minister and former ambassador to the United Nations; he was detained by 10 men wearing hoods and plainclothes at a shopping mall.

Relatives complained Monday that authorities were not allowing them to deliver food or personal items to the detainees in the capital's infamous El Chipote prison.

Another Unamos party leader, Suyen Barahona, was arrested earlier Sunday. Police have also arrested prominent ex-Sandinista dissidents Dora María Téllez and Hugo Torres and, another opposition leader Ana Margarita Vijil. Arrested Saturday was Unamos activist Tamara Dávila.

Unamos was formed by former Sandinistas angered by Ortega’s autocratic ways, nepotism and perpetual re-elections.

The weekend arrests suggest Ortega has moved beyond arresting potential rival candidates in the Nov. 7 elections, and has begun arresting any prominent member of the opposition. The arrests bring to 13 the number of opponents detained since June 2.

“This is not a transition to dictatorship, it is a dictatorship in every way," said former general and Sandinista dissident Hugo Torres before he himself was arrested Sunday.

Tellez was a leading Sandinista militant who led an assault on the National Palace in 1978, taking hostage the congress of dictator Anastasio Somoza in exchange for the release of Sandinista prisoners.

Following Somoza’s overthrow, Tellez served as health minister in the first Sandinista government which ruled from 1979 to 1990. Like many former guerrillas, she later split with Ortega.

Police said they arrested the opposition leaders on charges related to a recently enacted law that classifies as treason any support for sanctions against officials in the Ortega regime; the U.S. has slapped sanctions on dozens of officials.

Under a law passed in December, Ortega’s government has the power to unilaterally declare citizens “terrorists” or coup-mongers, classify them as “traitors to the homeland” and ban them from running as candidates.

The law punishes those “who lead or finance a coup ... encourage foreign interference, ask for military intervention ... propose or plan economic blockades, applaud and champion the imposition of sanctions against Nicaragua or its citizens.”

Those accused “will be traitors to the homeland, and for that reason may not run for public office.” Treason is punishable by prison terms of up to 15 years.

In a statement Monday, Nicaragua's government wrote "the only thing these usurpers have in common is their loyalty to the United States government and the fact that, directly or through their respective NGOs, they have received millions of dollars of money from the American people ... with the aim of overthrowing the elected government of President Commander Daniel Ortega Saavedra.”

Ortega has already arrested four potential opposition candidates who might have challenged his bid for a fourth consecutive term.

Nicaragua’s National Police arrested the four opposition pre-candidates earlier this month.

On June 8, they arrested pre-candidate Félix Maradiaga, a pre-candidate for the opposition coalition Blue and White National Unity, and Sebastián Chamorro, a former director of the opposition coalition Civic Alliance.

The previous week authorities detained Cristiana Chamorro, a cousin of Juan Sebastián Chamorro, and Arturo Cruz Sequeira, a former ambassador to the United States.

Ortega initially led Nicaragua from 1979 to 1990 following the Sandinista revolution that ousted Somoza. He returned to the presidency in 2007 after three failed election attempts, and he won reelection in 2011. He then sidestepped term limits to get himself reelected in 2016, and packed courts and government agencies with allies. The Sandinista party controls the courts and the legislature, and has stifled universities and the Roman Catholic church.

Torres said Ortega has now instituted a more suffocating dictatorship than Somoza, who faced opposition from the within the church, intellectual circles and universities.

“I think Ortega has outdone Somoza,” said Torres. “He has subordinated all the power to himself as Somoza never could. He has a bigger repressive apparatus than Somoza ever had.”

Julie Chung, the U.S. State Department’s acting assistant secretary for Western Hemisphere affairs, said via Twitter that Ortega’s “campaign of terror continues with more arbitrary arrests this weekend. OAS members must send a clear signal this week: enough repression. The region cannot stand by and wait to see who is next.”

The Associated Press