The Latest on the flow of migrants into Europe (all times local):

12:25 p.m.

Hungary's parliament has endorsed a government-proposed referendum on the European Union's plan to resettle refugees within the bloc according to a quota system.

The resolution, which can be appealed at the Constitutional Court, was approved 136-5 with support from lawmakers of the governing Fidesz party, its Christian Democratic coalition partners and the far-right Jobbik party.

The referendum — valid if turnout is above 50 percent — is expected to held by October and cost up to 5 billion forints ($18 million).

The referendum question is: "Do you want the European Union to prescribe the mandatory settlement of non-Hungarian citizens in Hungary even without the consent of parliament?"

Prime Minister Viktor Orban, who rejects taking in migrants, says voting "no" in the referendum will be "in favor of Hungary's independence."

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10:45 a.m.

Human Rights Watch says Turkish border guards are continuing to shoot and beat Syrian refugees trying to cross into Turkey and is calling on the country to investigate abuses.

The advocacy group said in a statement Tuesday Turkish border guards in March and April used excessive force against Syrians and a smuggler trying to reach Turkey, killing five people, including a child and injuring 14 others.

The group also urged Turkey to reopen its border to Syrians.

Turkey, home to 2.7 million Syrian refugees, rejects claims that its border guards shoot at refugees and says it has an open-door policy toward migrants, although new arrivals are rare.

Human Rights Watch researcher Gerry Simpson said: "Firing at traumatized men, women, and children fleeing fighting and indiscriminate warfare is truly appalling."