Hong Kong student leaders say they're considering retreating from protest sites on city streets after more than two months in the latest sign that momentum is fading in their movement for greater democracy.

Members of the Hong Kong Federation of Students said Thursday that they're mulling whether to stay or go.

Spokeswoman Yvonne Leung told a local radio station that the group hopes to come to a decision within the next week.

Joshua Wong, the 18-year-old leader of Scholarism, said on his social media accounts that his group will discuss and coordinate with the federation on the decision.

The two groups have played key roles in organizing the protests.

The founders of Occupy Central, which also played a role in the protests, called this week for them to end.