Copious amount of ink was thrown at Sisodia by Brijesh Shukla (42) from North-east Delhi's Karawal Nagar who was detained by the police and questioned for five hours before being arrested.
Shukla said he was angry with the Deputy Chief Minister for his Finland tour at a time when the city was grappling with a health crisis. The ink was splattered across Sisodia's arms and a portion of his forehead when he was about to get into his car after talking to mediapersons.
Shukla claimed that the ink attack wasn't pre-planned and it happened when he got to know that Sisodia was about to come to meet the LG.
"Shukla claimed that he had gone to meet the LG to discuss some problems being faced at the hospitals in his area. When he got to know that Manish Sisodia was due to arrive to meet LG, he decided to get a bottle of ink. He was angry at Sisodia for being away to Finland while the city was grappling with cases of dengue and chikungunya. We are investigating his claims," the officer said.
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Shukla is the president of Swaraj Janata Party and has been actively engaged in protests against the AAP government over various issues.
He keeps filing RTIs seeking information from the government. He had also contested the Assembly elections as an independent candidate in 2003.
Sisodia said the ink attack on him is a reflection of "politics by Congress and BJP".
Sisodia had returned to the capital last night from his Finland trip. Sisodia was asked by Jung to return to the capital on Saturday but he came back as per schedule yesterday.