A man died while trying to escape from detention in Dimitrovgrad, BBC reports. The incident happened around 05:00.
The 32-year-old man fell from the fourth floor of the police building. He managed to slip under the bars of the detention facility.
The man was detained on August 3 after five illegal migrants were found in his car.
An internal investigation has been launched into the case. The prosecutor's office has also been notified.