There have been 31 violations of the Syrian ceasefire over the past three days, Russia Today reported, citing Russian Foreign Ministry spokeswoman Maria Zakharova.

She added that during the same period the number of ceasefire agreements between local groups increased to 38.

Zakharova told reporters on Wednesday that the figures were provided by the US. However, she did not specify who had broken the ceasefire.

She urged the US to “adhere to their commitments,” and added: “Now is the time to very carefully and responsibly approach the implementation of the Russia-US agreements on the cessation of hostilities in Syria.”

The Russia-US brokered ceasefire, which came into force on February 27, is being monitored by a co-chaired task force that exchanges relevant information.

In general, the US has taken a rather skeptical stance towards the truce’s prospects for success. Nevertheless, President Barack Obama has said his administration will do everything in its power to make it work.

Last Wednesday, Secretary of State John Kerry told a Senate committee that Washington has been discussing “Plan B” options, in case the truce agreement in Syria fails.

Source: MENA