but distinguished by the subject composition, the 
moment  of  implementation,  legal  regulation. 
Therefore,  we  consider  it  necessary  to  clearly 
indicate  the  specific  divisions  of  the  National 
Police  bodies  that  are  entitled  to  conduct  tacit 
actions, because this is one of the most important 
factors  of  an  impartial  and  complete 
investigation of a criminal offence and just the 
specified Code regulates the procedure and legal 
grounds for conducting these activities. 
 
Besides, the same article provides for including 
other persons in performing tacit actions by the 
decision of the investigator or prosecutor; which 
other  persons  the  legislator  means  is 
incomprehensible. Clearly, in practice, there are 
cases  of  involvement  of  various  categories  of 
persons by the employees of operational units in 
individual covert investigative (search) actions, 
for  example,  control  over  the  commission  of 
crime, special task of detecting criminal activities 
of an organized group or criminal organization, 
etc., but there are no clear rules in this case. 
 
For  example,  Sokolov (2022, p.  132) cites the 
following circle of actors, who can be involved 
in  the  performance  of  tacit  activities,  namely: 
employees  of  operational  or  operational  and 
technical divisions of law enforcement agencies, 
specialists,  translators,  individual  citizens, 
persons  who  cooperate  with  operational 
subdivisions  on  a  confidential  basis,  etc.  The 
author  also  supports  the position regarding  the 
involvement in individual cases of the applicant, 
victim,  witness,  etc.,  in  covert  investigative 
(search) actions. 
 
In  this  context,  interesting  is  the  issue  of 
attraction of a minor in tacit activities. Currently, 
juvenile  delinquency  is  a  fairly  common 
phenomenon,  for  example,  the  creation  of 
various criminal groups with their participation. 
The  purpose  of  covert  investigative  (search) 
actions  is  to  collect  necessary  evidence  in 
criminal proceedings in a "hidden" way. In such 
cases,  it  will  be  more  effective  to  involve  the 
juvenile in performing tacit measures. This issue 
is not  regulated  by  the current  legislation,  and 
therefore requires more detailed study. 
 
The  next  problematic  aspect  of  covert 
investigative  (search)  actions  carried  out  by 
operatives  is  the  use  of  the  results  of  these 
activities  as  evidence.  In  the  categories  of 
criminal offences such as illicit traffic in narcotic 
drugs,  corruption  offenses,  criminal  offenses 
against  national  security,  the  direct  source  of 
evidence  is  precisely  the  results  of  tacit 
measures.  But  these  data  are  not  always 
recognized  by  the  court  as  admissible  due  to 
failure to comply with protocol procedures. 
 
In accordance with Article 252 of the Criminal 
Procedure Code of Ukraine (Law of Ukraine No. 
2465-IX,  2012), recording  of  the  progress  and 
findings  of  covert  investigative  (detective) 
actions shall comply with the general rules for 
recording criminal proceedings provided for by 
this  Code.  After  the  conduct  of  a  covert 
investigative (detective) action, a record shall be 
drawn  up,  with  attachments  thereto,  where 
necessary.  Information  about  persons  who 
conducted  covert  investigative  (detective) 
actions, or were involved in the conduct thereof, 
where  security  measures  are  applied  to  them, 
may be indicated, provide that confidentiality of 
personal  data  relating  to  them  is  protected  in 
accordance  with  the  procedure  established  by 
law.  The  conduct  of  covert  investigative 
(detective) actions may be recorded with special 
technical and other means. 
 
The protocol on the course and results of covert 
investigative  (search)  action  (or  its  stages)  is 
drawn up by the investigator, if it is conducted 
with his (her) direct participation, in other cases 
– by the authorized employee of the operational 
unit,  should  comply  with  the  general rules  for 
recording criminal proceedings. Other cases are 
those in which surveillance materials were used 
as  reasons  and  grounds  for  initiating  pre-trial 
investigation;  assignment  to  conduct  an 
unspoken investigative (search) action, as a rule, 
shall be made available to the  operational  unit 
that detected the offence, but its authority is taken 
into  account  (Order  No. 
114/1042/516/1199/936/1687/5, 2012). 
 
The  decision  of  the  investigating  judge  on 
permission  to  conduct  covert  investigative 
(search)  action  or  the  resolution  of  the 
investigator, prosecutor on the implementation of 
this operation is attached to the directive of the 
investigator,  prosecutor.  If  several  operative 
units are involved in the conduct of tacit activity, 
drawing up the protocol is entrusted to the unit 
defined by the head of the body as the main one. 
 
Employees  of  operative  units  –  performers  of 
covert  investigative  (search)  actions  –  should 
take  necessary  measures  to  ensure  the 
preservation  and  integrity  of  the  received 
materials  (protection  against  unauthorized 
interference,  deformation,  demagnetization, 
discoloration, erasure, etc.) before handing them 
over to the prosecutor.