Myanmar security forces killed an anti-coup protester and wounded a toddler in fresh violence overnight, media reported on Monday, as activists called on armed ethnic groups in the diverse nation to back their struggle against military rule.

After the bloodiest day since last month's military coup with 114 deaths on Saturday, security forces opened fire at a funeral on Sunday, witnesses said.

Another 13 people were killed in other incidents over the weekend, according to the Assistance Association for Political Prisoners advocacy group on Sunday, taking its total toll of civilians killed since the Feb. 1 coup to 459.