MINSK, Belarus (AP) — Police in Belarus detained over 50 people across the country during protests demanding the resignation of Belarus' authoritarian leader, officials said Wednesday.

The renewed crackdown on protesters, who have been taking to the streets for over two weeks, comes as authorities crank up pressure on the opposition, jailing several activists, summoning others for questioning and selectively ordering dozens of demonstrators to appear in court.

The Interior Ministry said 51 protesters were detained Tuesday at rallies that spanned several cities. According to the Viasna human rights group, 15 people were detained in Minsk, the country's capital, where several thousand people rallied at Independence Square despite heavy rain, pushing for the country's longtime President Alexander Lukashenko to resign.

Protests broke out after official results of the Aug. 9 presidential election were announced, giving Lukashenko his sixth consecutive term, with 80% of the vote. They continued despite violent crackdowns during the first days after the election, when police detained nearly 7,000 people and injured hundreds with rubber bullets, stun grenades and clubs. At least three people died.

The brutal suppression of peaceful rallies fueled public anger, helping swell the number of protesters, reaching an unprecedented peak of about 200,000 participants on two consecutive Sundays. The huge crowds forced the government to back off and allow the demonstrations to take place largely unhindered for the past two weeks.

Lukashenko, who has ruled the country with an iron fist since 1994, bristled at demands to step down and said he would not give in to pressure. In a show of defiance on Sunday, the 65-year-old embattled leader toted an assault rifle as he arrived at his residence by helicopter, while protesters rallied nearby.

Following his directives to get tougher on protesters, police this week started beefing up their presence on the streets, cordoning off some areas of the city and detaining people after days of inaction.

The detentions come without the dramatic violence seen two weeks ago, as Lukashenko moves to quell the unrest gradually, with vague promises of reforms mixed with threats, court summonses and selective arrests.