Migrant crisis.
12 March 2016
The BBC has been given a video showing Turkish coastguard using sticks against a boat full of migrants as they sail to Greece in the Aegean Sea.
The incident is said to have happened in Turkish waters as the migrants were on their way to the island of Lesbos.
The migrants accused the coastguard of attacking them, but the coastguard say they were trying to stop the boat without harming the occupants.
The vast majority of coastguard patrols in the Aegean are professional, with Turkish and Greek personnel either towing migrant vessels back ashore or rescuing those that capsize. But there have been reports of attacks.
Masked officials on the Greek side were filmed last year appearing to puncture inflatable dinghies with migrants on board - and now this, with the Turkish coastguard claiming they were merely trying to stop the engine and stop the boat advancing.
It could be that these are individual coastguard officers acting on their own and not following orders, perhaps fuelled by machismo and even xenophobia. But it's also possible that this is more than an isolated case, showing the Turkish authorities going to any length to stem the migration flow under renewed pressure from Brussels.
Either way, it will worry EU leaders meeting later this week to finalise a plan with Turkey to reduce migrant numbers. Could these scenes be repeated as Turkey steps up patrols of Europe's borders?
The incident captured on the video is thought to have occurred in Turkish waters
opposite the island early on Saturday.
The 30-second clip shows people wearing life jackets on a rubber dinghy being hit with poles by men standing on another vessel. The people on the boat shout out in Farsi and Arabic.
The boat of migrants eventually moved away and made it to Lesbos.
Migrant crisis: Turkish guards hit migrant boat with sticks - BBC News