CARACAS, Venezuela (AFP) — Venezuela hit its 100th day of anti-government protests Sunday, one day after its most prominent political prisoner, Leopoldo Lopez, vowed to continue his fight for freedom after being released from jail and placed under house arrest.

Lopez’s surprise release triggered speculation over the prospect of negotiations between the opposition and Venezuela’s embattled leftist government of Nicolas Maduro, with a rising toll of death and destruction from three months of non-stop street protests.

The release was welcomed, sometimes with reservations, by several other Latin American countries, Spain and the United States.

Lopez, leader of the Voluntad Popular (Popular Will) party and a symbol of resistance to the Maduro government, emerged hours after his release from prison looking fit and happy — though wearing an ankle bracelet to allow authorities to monitor his movements, his family said.

He pumped his fist in the air, unfurled the Venezuelan flag and told a crowd of supporters: “Yes, we can!”

“I maintain my firm opposition to this regime,” Lopez said in a statement read by a leader of his party. “I reiterate my commitment to fight until conquering Venezuela’s freedom.”

President Maduro, in televised remarks Saturday, called for a message of “peace and rectification” from Lopez that could lead to reconciliation, adding, “The nation wants peace.”

But a defiant-sounding statement from the MUD opposition coalition said Lopez’s release was not so much “a concession by the regime” as the result of “the insistent street pressure that Venezuelans have exercised for 100 days, and from international solidarity with our struggle.”

Analysts said it was too soon to know the ultimate effect of Lopez’s release, but they said it seemed significant that the government had agreed to release a man it once termed “a monster,” while Lopez had accepted house arrest after insisting he would leave prison only with full freedom and once all opposition members were free.

Lopez, a 46-year-old Harvard-educated politician, was held for more than three-and-a-half years in a military prison outside Caracas for allegedly inciting violence by calling for anti-government protests.

His release has been a key demand of Venezuela’s opposition and the international community, amid an intensifying political confrontation aimed at forcing the unpopular Maduro to hold early elections.

Attorney General Luisa Ortega — the most senior figure to defy Maduro — accused the government of using Lopez to “improve its image.”

“People deprived of liberty cannot be used as if they were hostages that can be objects of negotiation,” she told the Chilean daily La Tercera.

At least 91 people have died since April 1 in clashes between protesters and security forces over moves by the courts and the government to strip the National Assembly of power, delay elections and rewrite the constitution.

The Supreme Court said it had ordered Lopez’s move to house arrest for health reasons, calling it a “humanitarian measure.”

In Madrid, Javier Cremades, Lopez’s Spanish lawyer, underscored that “all of Leopoldo Lopez’s civil and political rights must still be restored.”

“What’s more, there are still 300 political prisoners in the Bolivarian jails,” he added.

Foro Penal, an NGO, puts the number of political prisoners in Venezuela at 433. The government insists they are in jail for acts of violence.

The US State Department called Lopez’s release “a significant step in the right direction,” but said more such steps are needed.

Luis Almagro, secretary-general of the Organization of American States (OAS), a severe critic of the Maduro government, said the release provided an “opportunity for reconciliation.”

The former mayor of a Caracas municipality, Lopez was an early champion of street protests to force political change in Venezuela as the oil-rich country spiraled into a severe economic and political crisis after the death of Maduro’s predecessor, Hugo Chavez.

The government blamed Lopez for a months-long outbreak of anti-government protests in 2014 that left 43 people dead.

He was sentenced to nearly 14 years in prison on charges that his defense said were manufactured and politically motivated.

Since then the crisis has deepened and grown more violent.

On Wednesday, pro-government militants wielding sticks and pipes stormed the opposition-held National Assembly and beat lawmakers, injuring at least five.

Maduro condemned the violence and said he had ordered an investigation.

Cremades said the latest development “indicates how desperate and divided they are; it’s a demonstration of the weakness of a cornered regime.”

Two other prominent opposition leaders jailed by the government on similar charges have since been moved to house arrest — the former Caracas mayor Antonio Ledezma and the former mayor of the western city of San Cristobal, Daniel Ceballos.