Police detained four people in the village of Prosenik on suspicion of drug offences, including possession of drug precursors. They are men aged 34 and 36 and a 29-year-old woman.
In the same village, officers also detained a 45-year-old man who drove after taking methamphetamine.
In Sredets, police detained a 40-year-old man over drugs. In Nesebar, they held a 42-year-old man who had cannabis.
In Tsarevo, police detained three people over threats.