Occupy Charleston, the local version of Occupy Wall Street, wants to establish a 24-hour presence at Marion Square -- indefinitely.

The group made its request Thursday to Mayor Joe Riley.

"It is necessary that an occupation occur in the heart of a city's public space and in the heart of a city's major financial centers," the group said in a memo to the mayor. "Local merchants will be the primary beneficiaries of an occupation for an indefinite period."

It requested a meeting to discuss the group's plans.

With the city's permission, Occupy Charleston occupied Brittlebank Park for 99 consecutive hours last month. The city said Thursday in a statement that the Brittlebank Park event was a positive experience, and it described Occupy Charleston participants as cooperative and reasonable. They left the park clean and orderly, the city said.

"We expect that their next effort will be a similar event. We have not been able to meet with them to discuss what they intend to do next. We will be setting up that meeting soon," the city said.

An Occupy Charleston march is planned for 11 a.m. Saturday at Marion Square, said William Hamilton, a group member.

Occupy Charleston is about creating civil discourse on the current state of the economy and government, he said.

"This is not exclusively a left-wing movement. You've got a lot of people who are simply frustrated," Hamilton said.