A Formula E race scheduled for Moscow on June 4 has been canceled due to "unforeseen circumstances" relating to road closures, the electric motor racing series said on Friday.

FE said in a statement that the race, round nine of a championship now reduced to 10, would not be replaced on the calendar.

The cancellation leaves three races, Berlin on May 21 and a double header in London on July 2 and 3. The series has already visited China, Malaysia, Uruguay, Argentina, Mexico, California and France.

The London races also have a question mark over them, however, with locals up in arms over the use of Battersea Park as the venue.