Bulgaria's Radev says a drone entered Bulgarian airspace from Romania and exploded near Kardam, close to the Romanian border.

INTELLIGENCE SUMMARY

Bulgaria's Radev says a drone entered Bulgarian airspace from Romania and exploded near Kardam, close to the Romanian border. No casualties or damage were reported. The blast occurred about 1 km from a Bulgarian gas compressor station. Bulgaria will increase border surveillance and security around strategic sites, while Radev said the drone’s origin and type remain unclear.