"Our teams right now in Idomeni [Greek border] treating people who’ve been injured by shrapnel from stun grenades fired by Macedonian army," the MSF said on its Twitter microblog.
Macedonia announced a state of emergency on its northern and southern borders Thursday as the southern European republic grapples with an influx of refugees fleeing crises in the Middle East, North and Sub-Saharan Africa.
Earlier on Friday, the MSF said over 3,000 had gathered at a shuttered Greek-Macedonian border point. Greek media reported Macedonian police dispersing crowds with stun grenades and tear gas.
Ireland’s RTE broadcaster cited an MSF team based in the bordering Greek village as saying it treated 10 people.
RTF cited a Macedonian Interior Ministry spokesman denying it that tear gas bombs had been used on refugees, saying "no incident… nothing like that" took place on its side of the border.
Macedonia, like all of Europe, is coping with an unprecedented flow of refugees seeking asylum in the European Union. Declaring the state of emergency, its government said it would deploy the army to defend its border.
Spokeswoman for EU Foreign Affairs Catherine Ray said Brussels was closely monitoring the developments in Macedonia.