A report by the Alliance of Independent Journalists in Jayapura in Indonesia's Papua region says there were 20 cases of intimidation and violence against journalists in 2013.
The Alliance says the results are a significant increase from 2012 when there were 12 cases.
Of the 20 cases, four occurred in West Papua and 16 in Papua.
The Alliance of Independent Journalists says the violence was done directly through verbal and physical intimidation such as threats and insults, vandalism, entering the editorial office without permission, and beatings.
According to the report, the violence committed against journalists was most frequently carried out by members of the police force and community groups.
The Alliance says of the 20 cases of intimidation and violence, there were no serious law enforcement investigations, and this will foster more attacks in subsequent years.
