For example, a lawyer for 13 people held in Yerevan's Erebuni police station told Human Rights Watch that her clients were detained around 11am on April 18, held for several hours, handed down summons and then questioned as witnesses in an ongoing investigation.
Some attempted to block roads in response to repeated calls by the leader of the protests, opposition MP Nikol Pashinyan to paralyse traffic.
Sarksyan's appointment has drawn criticism from political opponents, who accuse him of engineering a power grab. "But we will not stop; we are resolute in our struggle to achieve change in this country", 24-year-old protester Suren Harutyunyan told AFP.
In recent days, police have rounded up scores of protesters throughout the city.
In 2015, Armenia held a referendum to change its form of government and hand more powers to the prime minister, downgrading the president - now also elected by parliament - to more of a figurehead.
In its statement, the police department, calling these actions illegal, says that the protesters divided into many groups are blocking traffic and disturbing people hampering them to move in transportation means.
Earlier it was reported that in Yerevan the number of detained participants of the protests has risen to 123 people. Despite the protests, the veteran politician, who was the only candidate, was voted in by 77 out of 94 MPs present at the National Assembly on Tuesday.
The Dashnaktsutyun Party, the Republicans' coalition ally, also backs Sargsyan's candidacy, meaning he should easily secure the simple majority needed for election.
Authorities said at the time that 46 people, including six police and Pashinyan sought medical help.
The anti-government protests in Armenia have entered the eighth day.
On Wednesday he appointed former PM Karen Karapetyan as First Deputy Prime Minister and re-appointed at their posts Foreign Minister Edward Nalbandyan and Defence Minister Vigen Sarkisian.