ROME: Charity boats rescuing migrants in the Mediterranean are colluding with traffickers in Libya, an Italian prosecutor was quoted as saying on Sunday, stirring up a simmering row over aid groups` role in Europe`s migrant crisis.

In an interview with Italian daily La Stampa, Sicily-based prosecutor Carmelo Zuccaro made his most specific claims yet over NGO activities off Libya, which the EU border agency Frontex recently describe d as tantamount to providing a `taxi` service to Europe.

Non-governmental organisations (NGOs) active in the rescue effort include long-established groups such as Doctors without Borders and Save the Children, and smaller, newer operations such as the Malta-based MOAS.

They have all dismissed suggestions of de facto collusion with smugglers as a baseless slur on volunteer crews whose only mission is to save lives in the absence of EU governments acting effectively to do so.

Over 1,000 migrants are feared to have died in waters between Libya and Italy so far this year, according to the UN refugee agency. Nearly 37,000 have been rescued and brought to Italy.

`We have evidence that there aredirect contacts between certain NGOs and people traffickers in Libya,` Zuccaro was quoted as saying by La Stampa.

`We do not yet know if and how we could use this evidence in court, but we are quite certain about what we say; telephone calls from Libya to certain NGOs, lamps that illuminate the route to these organisations` boats, boats that suddenly turn off their [locating] transponders, are ascertained facts.

Zuccaro is the head of a five-strong pool of prosecutors investigating criminal aspects of the migrant crisis, from trafficking to illegal exploitation of migrants on Italian farms and via prostitution to rackets in the provision of reception facilities.

La Stampa reported that prosecutors were looking into whether some of the newly-established NGOs may be financed by the traffickers as a way of making it easier to guarantee their human cargoes get to Italy.

The organisations involved have all dismissed the charges against them.

They fear they are being targeted by a smear campaign designed to get them out of the way. One group, SOS Mediterranee, told AFP last week it had `never, not once` been put in touchwith a migrant boat via smugglers.

Under an EU-backed strategy, Italy is currently trying to beef up Libya`s coastguard in the hope more boats can be prevented from getting out of Libyan territorial waters and the migrants returned to holding camps in the troubled country.

The strategy has been described by rights groups as a breach of Europe`s obligations under international refugee conventions. And it has so f ar made little headway towards closing down the Libya-Italy migrant route.

Rome said on Friday it would be providing Libya with ten new coastguard boats but a cooperation deal covering holding camps and repatriations is in limbo after it was suspended by Libya`s Court of Appeal.The number of people leaving Libya in the hope of starting a new life in Europe is up nearly 50 per cent this year compared with the opening months of 2016.

With most departures coming in the warm summer months, the trend points to around 250,000 people arriving over the course of 2017 a forecast Zuccaro described as `an under-estimate`. Some 500,000 migrants were registered in Italy in the three years spanning 2014-16.-AFP