The Catalan government declared victory early Monday after the majority of voters supported Catalan's independence from Spain.
According to the Catalan government, 90 percent of the ballots cast were for independence — with 2,020,144 voting yes, and 176,566 no, The Washington Post reported.
The results came a day after Spanish national police violently clashed with supporters of the referendum.
Spanish state police wore riot gear and physically blocked voters from entering polling places on Sunday during Catalonia's referendum.
Video of police dragging people, including the elderly from a voting stations and beating them back with batons emerged on social media.
Catalonia’s government spokesman says 337 people have been injured, some seriously, during the police crackdown.
Police fired rubber bullets and charged people with batons as they tried to entering polling places in Barcelona. Police smashed the windows of at least one polling place and seized ballot boxes and voting papers.
The wealthy northeast region of Catalonia includes the city of Barcelona and has its own language, culture and regional government. Catalan nationalists want the region to become its own republic and break away from Spanish control.
The government declared the referendum illegal and ordered police to close polling stations and seize ballot boxes.
Catalan international affairs director, Raul Romeva, said that regional authorities would appeal to European authorities for Rajoy’s governments’ violations of human rights.
The Associated Press contributed to this report.