With election season officially beginning in Delhi University and posters being put up at almost every place in the campus, the Delhi High Court on Tuesday sought response from city police and civic agencies on a plea seeking a complete ban on the alleged defacement of public properties.A division bench headed by Acting Chief Justice Gita Mittal asked DU, Delhi Police, civic bodies and the Delhi Metro Rail Corporations to file response by September 11 and action taken by them against the violation.The court was hearing a PIL filed by advocate Prashant Manchanda, who sought a complete ban on the alleged defacement of the public properties by the candidates for the upcoming Delhi University Student Union (DUSU) elections on September 12.The plea also sought direction to the civic agencies to impose heavy fines on the political parties and the aspiring candidates in order to prevent further defacement of the properties.