According to the official EU website:
In addition to their own valid passport or ID card, all children
travelling:alone; or with adults who are not their legal guardian; or with only
one parent may need an extra (official) document signed by their
parents, second parent or legal guardian(s) authorising them to
travel.You should first consult the local embassy of the country the children
are travelling to for information on which, if any, other documents
they need to make the trip.
Which means that the children would need their own ID Card (Obcansky prukaz) as well as an official authorization from their parents.
Credit:stackoverflow.com‘
4 Mar, 2024
4 Mar, 2024
4 Mar, 2024