Two more people were arrested on Friday and Saturday in connection with the arson at a Czech optics and drone factory last month, Czech police and prosecutors said on Saturday, Reuters reported.
One of them was arrested in Bulgaria on Friday and Czech authorities will seek his extradition
A previously unknown pro-Palestinian activist group has claimed responsibility for the March 20 fire at an industrial complex in Pardubice, about 120 km east of the Czech capital Prague.
Czech authorities earlier this week said five people had been detained, including an Egyptian and an American, after the fire, which affected a building used by Czech defense group "LPP Holding". Polish prosecutors said on Wednesday that two Polish citizens had also been detained in connection with the case.
Czech police and prosecutors now said another person had been detained on Saturday. Another suspect was arrested in Bulgaria on Friday, and police said they would seek his extradition. Both were foreign nationals, Czech authorities said.
The group claiming responsibility for the attack said in an online statement that the targeted company had been developing weapons for Israel. "LPP Holding" announced plans to cooperate with Israeli company "Elbit Systems" in 2023, but said those plans never materialized.
"LPP Holding"'s products include drones that are exported to Ukraine.