The move underscores the EU's toughening stance toward both the government of Hungarian Prime Minister Viktor Orban and his right-wing allies in Poland over the bloc's democracy norms and migration.
Refugee protection and security can be accomplished at the same time, says UN high commissioner for refugees
"Hungary is a European Union member, so the bloc's treaties must be respected and the court's rulings must be acknowledged," the populist leader said in a radio interview.
European Court of Justice dismisses Slovakia, Hungary's case against relocating of asylum seekers
"In the interest of Europe and in the spirit of the old Hungarian-Polish friendship, the inquisition campaign against Poland can never lead to success," Orban said during a visit in Romania.
"An unidentified male called to say that he had placed a bomb on an international train travelling through Hungary," police said in a statement.
The move came hours after the government of Prime Minister Viktor Orban said it would end a poster campaign attacking Soros that has been accused of anti-Semitism.
Hungarian investors should benefit from incentives in order to achieve bilateral trade target, says Turkish PM
Hungarian PM says refugees should be moved "out of Europe"
A new law, passed by 130 votes to 44, will force groups receiving more than 24,000 euros ($26,000) annually in overseas funding to register as a "foreign-supported organisation", or risk closure for non-compliance.
A crowd estimated at 10,000 people by local media waved European Union flags and chanted "Democracy! Freedom for Hungary!" as they made their way toward the parliament building, escorted by police cars.
Hungary's foreign ministry said Timmermans "should resign from his post after having accused Hungary's Prime Minister and the country's government of anti-Semitism".
"Hungary is defending its border, and the Schengen zone at the same time," Karoly Kontrat, an interior ministry state secretary, told a press conference in Roszke beside the fence on Hungary's southern frontier.
A higher education bill fast-tracked through parliament on April 5 has been widely seen as directly targeting the Central European University (CEU), founded by US billionaire George Soros in 1991.
Under the so-called Dublin rules, asylum seekers are meant to be sent back to the first European country they registered in.
The UN refugee agency has repeatedly cautioned that Hungary's use of physical barriers and restrictive policies basically deny the access to asylum guaranteed under international law.
A new survey asks citizens about the international nongovernmental organisations (NGOs) that the government says support illegal immigration or "interfere" in Hungary's internal affairs.
Controversial legislation previously criticized by United Nations
Foreign Minister Peter Szijjarto says Brussels bureaucrats threatening EU security
EU Migration Commissioner Dimitris Avramopoulos will travel to Budapest in the coming weeks after Hungary's parliament approved the detention scheme on Tuesday.
The legislation, approved by a large majority of lawmakers, is in response to recent terror attacks in Europe carried out by migrants, according to hardline Prime Minister Viktor Orban.