Two suspects detained following an arson attack on a construction site near defence companies in Munich are due to appear before an investigating judge on Friday, the Bavarian State Criminal Police Office (LKA) said.
The judge will decide whether arrest warrants should be issued for the two Bulgarian nationals, a 28-year-old woman and a 38-year-old man.
They are suspected of involvement in Thursday's attack, in which several incendiary devices were thrown from a car onto the construction site located near Munich's eastern railway station and facilities linked to drone companies Helsing and Rohde & Schwarz.
At least one of the devices started a fire, which police officers extinguished. No significant damage was caused, a police spokesman said, while another device had to be defused by specialists.
An LKA spokesman declined to comment on a report by German newspaper Bild that police had also carried out an operation at an apartment in Unterhaching, just south of Munich, following the attack.
There are currently no other suspects in the case, the spokesman said.