Spain's Prime Minister Pedro Sanchez will hold all meetings via video conference starting from Thursday after fellow minister Irene Montero was diagnosed with coronavirus, the government said in a statement.

Montero's partner Pablo Iglesias, who is deputy prime minister, was quarantined and all ministers will be tested on Thursday morning, the statement said.

"This morning, the rest of the cabinet will be tested and the results will be known this afternoon and will be reported officially," the statement said.

Sanchez will head a reduced cabinet meeting on Thursday only attended by the ministers whose presence is needed to approve new measures against coronavirus spreading.

All further meetings will be held through video conference, the statement said.