Gas-extracting holding Burisma announced the closure of all legal and judicial actions in Ukraine against the president of the holding Mykola Zlochivskyy and operating companies in the Burisma Group.
"This decision is the result of many months of mutual work of two teams - the Prosecutor- General's Office and Burisma Group," the company said in a statement on 12 January.
In the course of the investigation, Burisma was made to pay 180mn hryvnya in additional taxes.
"Burisma Group Company fully repaid this sum," the report says.
In late December, the deputy head of PPB faction in the Verkhovna Rada Ihor Kononenko, who is close to President Petro Poroshenko, reportedly met with Zlochivskyy in Vienna.
In the summer of 2016 PGO, launched a probe against one of Burisma Group companies on suspicion of tax evasions estimated at 1bn hryvnia.
Among the CEOs of Burisma are the son of US Vice-President Hunter Biden and former President of Poland Aleksander Kwasniewski.
Mykola Zlochivskyy served as environment minister from 2010 to 2012 in the government of Mykola Azarov. In early 2015, Zlochivskyy was declared wanted on suspicion of illicit enrichment.
In September 2016, Kyiv's Pechersk district court ordered the Prosecutor General's Office to drop the case against Mykola Zlochivskyy and take him off the wanted list.