Omendra alleged that the accused, including shop owner Ajeet, sneaked into the house this morning and opened fire on his 18-year-old brother Tinku, killing him on the spot, police said.
The second accused Amit, who was later arrested, told police that they had mistakenly killed Tinku and their target was Omendra, they said.
He said Omendra had filed an RTI seeking to expose irregularities in the functioning of the fair price shop of his friend and co-accused Ajeet, which had angered them.
A manhunt has been launched to nab Ajeet, who is still at large, police said.
