* Maldives in crisis since last week
* Maldives opposition leaders call for intervention by India
* China cautions against foreign meddling in Maldives
The exiled former president of the Maldives accused authorities on Wednesday of mistreating a supreme court judge thrown into prison following the imposition of a state of emergency in the Indian Ocean island nation.
The Maldives has been in crisis since last week when the Supreme Court quashed convictions ranging from corruption to terrorism of nine opposition figures, including former president Mohamed Nasheed, its first democratically elected leader.
Tension came to a head when President Abdulla Yameen's government rejected the ruling, imposed a state of emergency on Monday and then, in the early hours of Tuesday, arrested the chief justice and another judge of the court.
Judge Ali Hameed was being harshly treated, Nasheed said in a Twitter post. He was granted asylum by Britain after the Male government allowed him to leave jail for medical treatment abroad in 2016.
Former president Maumoon Abdul Gayoom, 80, who was also arrested in the crackdown and sent to a prison island, had stopped eating, Nasheed added.
"I am told President Gayoom is not taking food, while Justice Ali Hameed has been ill treated," Nasheed said on Twitter, but gave no further details.
However, Dunya Maumoon, Gayoom's daughter and a minister of state in Yameen's administration, rejected Nasheed's comment about her father, telling Reuters: "I just visited my father. He is keeping well. Nasheed is just spreading rumours."
Gayoom ruled the Maldives for 30 years until 2008, when Nasheed was elected president, and he now stands with the opposition in the fractious politics of the tropical islands, home to 400,000 people, most of them Muslims.
The Maldives, best known for its luxury beach resorts, has assumed greater importance since China began building political and economic ties in its so-called "String Of Pearls" strategy to create a network of ports in the Indian Ocean.
On Wednesday, China cautioned against any foreign meddling in the islands' internal affairs, after Maldives' opposition leaders called for intervention by its rival, India.
"The international community should play a constructive role from a position of respecting the Maldives' sovereign rights, rather than taking actions that will complicate the situation," foreign ministry spokesman Geng Shuang said, when asked about the possibility of military intervention.
'Assault on democracy'
India, which has historically had greater clout in the islands, located near key shipping lanes, has sought to push back against China's growing influence.
India has expressed concern over the situation but has been silent on the calls for intervention.
"We are disturbed by the declaration of a state of emergency in the Maldives, following the refusal of the government to abide by the unanimous ruling of the full bench of the Supreme Court on 1 February, and also by the suspension of constitutional rights," its foreign ministry said on Tuesday.
Since Yameen took power in 2013, his government has faced heavy criticism over the detention of opponents, political influence over the judiciary and the lack of freedom of speech.
Nasheed, who is in the Sri Lankan capital of Colombo, urged India to send an envoy backed by its military to the Maldives to free the political detainees and judges.
He also asked the United States to block financial transactions of government leaders.
"It is essential that India leads the international community in forcing President Yameen to comply with last week's Supreme Court order," he wrote in an op-ed article in the Indian Express
newspaper on Wednesday.
Indian intervention in the Maldives, about 400 km away, would not be unprecedented, as New Delhi sent troops in 1988 to foil a coup. But it has since avoided getting dragged into the island's politics.
The top UN human rights official, Zeid Ra'ad al-Hussein, called on the government to immediately lift the state of emergency and said it was an "an all-out assault on democracy".
France called for the return of normal institutions and respect for the rule of law.
"France is concerned by the suspension of civil liberties and the arrests that took place after the declaration of a state of emergency in the Maldives," Foreign Ministry spokeswoman Agnes Von der Muhll said in a statement.
Yameen, the half-brother of former president Gayoom, said his actions were designed to stop a coup and suggested that two senior judges acted against him because law enforcement officials were investigating them for graft.
On Tuesday, the three judges who are still free reversed the Supreme Court's decision to drop charges against the nine political dissidents, the court said on its website.
Singapore on Tuesday issued an advisory to citizens against non-essential travel to the Maldives, following similar measures by China, India and the United States.