Kyriakos Mitsotakis spoke during a wide-ranging event in the northern Evros border city of Orestiada
The prime minister's visit highlights the need of expanding the border fence with Turkey, a critical measure to curb uncontrolled refugee flows into Greece
The incident isn't the first time that smugglers have used the same method to avoid roadblocks, often times with fatal results, including the death of unsuspecting motorists
Police said shots fired from Turkish side after a patrol blocked migrant smugglers ferrying migrants; border guard out of danger