HEILIGENDAMM (Germany), June 6 (RIA Novosti) - Police succeeded in clearing the railway line leading to the main venue of the G8 summit and warned protesters not to engage in any further acts of provocation.

Protesters of the Group of Eight industrialized nations summit in Heiligendamm blocked the small-gauge railroad, the only way to get from the media center in the neighboring town of Kuehlungsborn, where all security checks are carried out, for about four hours. During that time, journalists had to be ferried to the summit venue by boat.

A police spokesperson said about 8,000 people took part in the sit-in on the railway until being dispersed by police.

Riot police warned demonstrators that provocations were possible, and asked them to avoid being drawn in.

Young people clad in black threw stones at riot police, who found it difficult to separate them from peaceful protesters. As a result, both checkpoints into the summit security zone were blocked off, and indiscriminate riot control methods were employed.

The main road from the Rostock Airport and other roads toward Heiligendamm were blocked since earlier today by rows of people engaged in a sit-down protest, as well as barricades.