The Election Commission has asked the rival factions of the Shiv Sena, led by Uddhav Thackeray and Eknath Shinde, to submit documents by August 8 in support of their claims on the election symbol of the political outfit.

Election Commission sources said the two sides have been asked to submit documents, including letters of support from the legislative and organisational wings of the party and the written statements of the rival factions.