One slogan painted on a bus stop said the military was being misused to protect junta chief Min Aung Hlaing, and urged soldiers not to shoot civilians.
Several actors and directors were also charged in February, but the campaign against celebrity protest supporters was stepped up last week when army-controlled Myawaddy TV broadcast a wanted list.
Indian villagers in Mizoram have given shelter to 34 police personnel and one firefighter who crossed into India over the last two weeks.
The journalists were in Naypyitaw to cover legal proceedings against Win Htein, a detained senior official from the National League for Democracy, the party that ran the country before the takeover.
Some of those areas have become battle zones, with protesters firing sling shots and throwing petrol bombs at security forces who have fired live rounds.
The nighttime protests may reflect a more aggressive approach to self-defense that has been advocated by some protesters.
The world is watching violent events unfold in Myanmar for many reasons, but perhaps one above all: because it can.
The UN special envoy on Friday urged the Security Council to act to quell junta violence that this week killed about 50 demonstrators and injured scores more.
Even the new US ambassador to UN Linda Thomas Greenfield said that the United States 'stands in solidarity' with the people of Myanmar who are in the streets protesting the coup.
Saturday marked the deadliest day since the February 1 coup, with two people killed after security forces fired on a rally in Mandalay and a third man shot dead in Yangon.
Extra troops were seen in key locations of Yangon, the nation's commercial hub and biggest city, including armoured personnel carriers near the central bank.