A Slovak court has decided to put the suspect in the attempted assassination of Prime Minister Robert Fico in pre-trial detention, a spokeswoman said.
"The reason... is concerns about a potential escape or that the criminal activity may continue," said Katarina Kudjakova, spokeswoman for the special penal court in Pezinok northeast of Bratislava.
Meanwhile, Slovakia's health minister has said the prognosis for Prime Minister Robert Fico was "positive" after the assassination attempt.
Mr Fico has been in hospital since Wednesday when a lone gunman shot him four times, including in the abdomen.
He underwent a five-hour surgery on Wednesday and a two-hour surgery yesterday, both at a hospital in the central Slovak city of Banska Bystrica.
"Yesterday's surgery, which took two hours, contributed to a positive prognosis of the prime minister's health condition," Minister Zuzana Dolinkova told reporters.
"The prime minister's condition is stable, but despite this it's still serious," she added.
The suspected gunman, identified by Slovak media as 71-year-old poet Juraj Cintula, arrived in a special penal court in Pezinok northeast of the capital Bratislava this morning.
He fired five shots at Mr Fico and hit him four times as the prime minister was walking towards his supporters after a government meeting in the central mining town of Handlova.
Interior Minister Matus Sutaj Estok said earlier that if one of the shots "went just a few centimetres higher, it would have hit the prime minister's liver".
Defence minister and deputy premier Robert Kalinak, Mr Fico's closest political ally, said the prime minister was conscious and his condition allowed him to recover.
"I don't think he could be taken to Bratislava in the coming days, his condition is still serious," he told reporters.
Mr Fico, 59, He is serving his fourth term as prime minister after campaigning on proposals for peace between Russia and Slovakia's neighbour Ukraine, and for halting military aid to Kyiv, which his government later did.
Mr Kalinak said the government would carry on without Mr Fico "according to the programme he has outlined", including two meetings next week.
The assassination attempt has deeply shocked the EU and NATO member country of 5.4 million people, already sharply divided over politics for years.
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Outgoing pro-Western President Zuzana Caputova and her successor Peter Pellegrini, a Fico ally who will take office in June, have called on fellow Slovaks to refrain from "confrontation" after the shooting.
They called a meeting of all parliamentary party leaders for Tuesday in a bid to show unity in the aftermath of the attack.
Mr Kalinak however suggested Smer would snub the meeting.
"They invited political party chiefs and our chairman is in the hands of doctors," he said.
Mr Kalinak added he would call Ms Caputova about the matter, stressing that Slovakia needed "reconciliation and peace".
But he was among politicians pointing fingers at their opponents for allegedly causing the attack, slamming opposition politicians and "selected media" yesterday for labelling Fico as a criminal, dictator or Russian President Vladimir Putin's servant before the attack.
"All these lies are the main reason why Robert Fico is fighting for his life...," he said in an emotional message on Smer's website.
