"My thoughts are with the Chakma family and the people of Tripura and Northeast. We are proud to call you our fellow Indian brothers and sisters," Gandhi added.

The incident took place on December 9, when a group of unidentified youths racially abused Anjel and his brother. Anjel reportedly said, "We are not Chinese; we are Indians," which provoked the group. The youth attacked the brothers and Anjel was hospitalised for weeks after suffering severe injuries on his neck and abdomen. He succumbed to the injuries on December 26.

According to police, five out of the six accused youth has been arrested, while the mastermind is absconding. The Uttarakhand police has declared a Rs 25,000 cash reward on information that will facilitate the arrest of the main accused.

Tipra Motha supremo Pradyot Kishore Manikya Debbarma on Monday announced a Rs 10 lakh cash reward on information that will lead to the arrest of the main accused.

Meanwhile, Thousands of students under the banner of Tipra Indigenous Students' Federation on Sunday organised a candle march here seeking justice for Angel Chakma.

The students covered a distance of around one kilometre from the North Gate of Ujjayanta Palace.

Tripura Chief Minister Manik Saha on Sunday said his Uttarakhand counterpart Pushkar Singh Dhami has assured him that all persons responsible for the murder will be arrested.