An anti-government protest in the Macedonian capital of Skopje has resulted in violence, with police being reportedly involved in clashes with demonstrators who have reportedly stormed the president's office.

The protest began Wednesday daytime and reportedly accumulated some three thousand people.

The protest entered its second day, with no violence having been reported on Tuesday.

After breaking through a police cordon, the crowds moved towards parliamentary buildings, burning pictures of Macedonian President Gjorge Ivanov on their way.

Several people detained by Skopje police after protests in front of prsd office turn violent https://t.co/zZnJmq1D29pic.twitter.com/PBsgxUeUzR — Marija Ristić (@Marien__R) April 13, 2016

In central Skopje, in the vicinity of the president’s office, violence reportedly continued, with protesters throwing flares and eggs at the premises.

Demonstrators have now reportedly entered the president's offices in the capital #Skopjepic.twitter.com/fZDO6sddNK — Balkan Newsbeat (@BalkanNewsbeat) April 13, 2016

Tensions escalated after a group of people tried to enter the office, Balkan Insight reported. A number of people have been injured, with medics providing assistance to those at the scene.

A journalist is reportedly among the injured.

Twelve people have reportedly been detained, police said.

Live in #Skopje: Police and protesters face-to-face as Macedonians rally against President's pardons. #протестирамpic.twitter.com/mps37k91hn — Balkan Insight (@BalkanInsight) April 13, 2016

Migliaia in piazza a #Skopje, Macedonia, dopo amnistia ai politici dello scandalo intercettazioni

Via @BalkanInsightpic.twitter.com/2umIRYYWIF — Antonello Guerrera (@antoguerrera) April 13, 2016

Protesters throwing stones at presidential office in city centre of #Skopje, burning office furniture and windows pic.twitter.com/QYErvujr60 — Balkan Insight (@BalkanInsight) April 13, 2016

The public office of Ivanov in #Skopje has been completely demolished. — Ivana Jordanovska (@JordanIva) April 13, 2016

The situation in the Balkan nation has been tense since March, after Macedonia's constitutional court allowed the president to pardon politicians accused of electoral fraud. Thousands have taken to the streets of Skopje following the decision. Riot police had to barricade the streets leading to the court building to prevent clashes between government supporters and protesters.