Delhi Chief Minister Arvind Kejriwal sought an exemplary punishment to the attackers of an Arunachal Pradesh MLA's son, who died after allegedly being beaten up by some shopkeepers in Lajpat Nagar. br br br "It is not the first case when a person of certain part of the country has been attacked. There is a need to take stringent action in this case so that an example could be set. This will also act as a deterrent for people not to repeat such an act," Kejriwal told reporters in Delhi after meeting a delegation of Northeast students at his residence.