OCCUPY CENTRAL - DAY 13: Full coverage of the day's events

The Federation of Students warned the government on Friday that they would “escalate” their actions - including blocking government headquarters again - if officials refused to come to the negotiating table with acceptable terms.

The Hong Kong government on Thursday cancelled talks with student leaders set for Friday, where they were supposed to discuss election reform issues as a step towards easing the current political stalemate. Chief Secretary Carrie Lam Cheng Yuet-ngor, appointed the government's representative, said the talks would not be held because the government felt they would not lead to a constructive outcome.

Meanwhile, Hong Kong's ICAC and police in Australia said they would launch separate investigations into a HK$50 million deal between Chief Executive Leung Chun-ying and an Australian firm.

Time lapse: Watch how thousands filled the streets as students vowed to escalate protests - Occupy Hong Kong Day 13