Spanish police said Tuesday they had detained a Moroccan man in the Mediterranean island resort of Palma de Mallorca suspected of recruiting jihadists for the Islamic State (IS) group.

"A police probe revealed that the accused had close contact with established terrorists involved with Daesh who are currently located in Syria," they said in a statement using a synonym for IS.

Spain's far-left Podemos party said Monday its members had voted overwhelmingly against backing a coalition government between the Socialists and centrist upstart Ciudadanos.

Fully 88.23 percent of the roughly 149,000 party members who took part in the April 14-16 internal referendum opposed supporting such a government, the party said in a statement.

Spanish police said Wednesday they had detained a Frenchman suspected of heading a weapons trafficking ring that supplied arms to one of the jihadists that killed 17 people in Paris in January 2015.

In a statement, police said Antoine Denevi, a 27-year-old from a small town in northern France, was detained on Tuesday in the southern Malaga area after Paris issued a Europe-wide arrest warrant.

Three-way talks headed by Spain's Socialists to form a new government broke down Friday less than 24 hours after they began, increasing the likelihood of a fresh election in June which would be the second in six months.

Negotiators from the Socialists, far-left party Podemos and centrist upstart Ciudadanos met on Thursday for two hours for the first time to try to end over three months of stalemate following an inconclusive December 20 general election.

Police investigating a weekend bus crash in Spain that killed 13 foreign students said Wednesday they suspect the driver either dozed off or became distracted by a conversation just before the accident.

The 62-year-old driver suffered chest injuries in Sunday's accident in the northeastern region of Catalonia and is in critical condition in hospital after his health worsened.

Thirteen people were killed and 44 injured Sunday when a bus carrying foreign exchange students crashed in northeastern Spain, local authorities said.

All the dead were female, according to a regional government source who requested anonymity.

Thousands of people in the heart of Spain's Basque country gave a hero's welcome on Saturday to a veteran separatist leader, following his release after more than six years behind bars.

A crowd of more than 10,000 gathered in the velodrome of the town of San Sebastian to give a tumultuous greeting to Arnaldo Otegi after his release last Tuesday.

Spain's far-left Podemos party said it would again vote against a bid by Socialist leader Pedro Sanchez on Friday to form a new government with centrist allies, following inconclusive elections last December.

"We are not going to sign a blank cheque" for the Socialists, Podemos number two Inigo Errejon told TVE public television.

Spanish police said Thursday they have seized about 20,000 military uniforms, "enough to equip an entire army", which were destined for jihadist groups operating in Syria and Iraq.

The uniforms were found in three shipping containers seized in the eastern ports of Valencia and Alicante last month when police uncovered an operation to smuggle arms to jihadists under the guise of humanitarian aid, police said in a statement.

Spain's Socialist chief Pedro Sanchez was set to lose his bid to form a new government on Wednesday after key parties vowed to vote against him in an evening vote of confidence in parliament.

Sanchez's Socialists, who came second in an inconclusive general election on December 20, face the vote after conservative acting Prime Minister Mariano Rajoy said he did not have the support to form an administration himself.