The UK and France have announced new measures to prevent "undocumented migrants" entering the Channel Tunnel by tackling the criminals who smuggle them to Calais and across the Channel.
The plans include the creation of a joint police operation aimed at tackling the people-smugglers who profit from the desperation of those trying to reach British shores.
More migrants attempted to reach Britain from Calais via the Channel Tunnel on Wednesday night, a day after a man was crushed to death under a truck.
Hundreds of migrants, some seemingly as young as 13 or 14, gathered for a third night along the fence to the freight terminal at Coquelles.
Around 15 were seen climbing through a hole in the wire before using clothes to help them jump over the first of two fences.
French police arrived in riot vans and rounded up some of the migrants, while three or four ran towards parked lorries.
A joint police operation has been launched to target people-smugglers who profit from the desperate migrants trying to reach the UK.
Calais' Mayor has accused Cameron of treating the region with "contempt" - and called on authorities to open the border unless help is given
More fencing and extra sniffer dogs have been sent from the UK to Calais in a bid to curb migrant incursions into Britain.