Two more men were apprehended in the ongoing police operation dubbed The Insolents.  The two men, believed to belong to the same criminal group, were arrested on the night of December 18 2009 as they entered Bulgaria through the Kalotina border checkpoint with Serbia.
 
"I hope the men detained from the kidnapping group will remain under arrest" Interior Minister Tsvetan Tsvetanov was quoted as saying by Focus news agency on December 19 2009.

A total of 27 men had been arrested as part of the operation since it was launched on December 17.
Tsvetanov said he hoped there would be enough evidence to keep at least six of the 27 in custody.

"This was a large scale operation. We pinpointed the exact location of  the two houses where the kidnapped victims had been held. We were able to gather enough DNA and other evidence from the site," Tsvetanov said.  

Initially, 25 people had been arrested as part of a nationwide police operation, codenamed The Insolents.

According to Tsvetanov, the individuals concerned, all Bulgarians, had been involved in a series of kidnappings in Bulgaria over the past two years.
 
"All these individuals have long criminal records and some have spent time in prison for robbery," Tsvetanov said. He noted that among the 25 suspects arrested none were current or former Interior Ministry employees.

"What I cannot explain to myself is how people with such criminal backgrounds had been let out of prison for good behaviour," he said.

At the time, Bulgarian news agency BTA quoted prosecutor-general Boris Velchev as saying that the group would never again be able to perpetrate crimes because police had now collected sufficient evidence to incriminate them.