apache chain problem???

guys, i own tvs apache as mentioned earlier in which automobile you owned. its 2006 purchased, clocked 21000 kms. Today morning, when i started my bike and shifted to 1 gear, suddenly some weird sound came from chain shaft and seemed the chain might have tweeked or gotten off the shaft as by moving the rear wheel by my hand , it made loud sound like chain strucking up and was very hard, dunno know why.As it is sunday so will ask the service station to check out tomorrow but if you can pour some lights as to what might be the prblem as nothing was seen till yesterday night when i parked it after my work back home.

Maybe the problem is becuase of less lubrication which have been caused the chain to slipped off when you put it 1st gear,you take the bike to workshop as soon as possible.

Vijay any soultion in sight? Is the first gear synchroniser at fault?

It should be as vibhor said, but I'm not sure. Any updates TV?

well guys got my bike back from station, my chain had been broken so was lucky nothing happened on my way back home.Spokes teeth were scratched and few of which were almost ripped so chain slipped and broke off. Chain and Sproko kit new installed 804.53/-
Ball bearing 6205c 25*52*15 115.44/-
Spocket set 100.00/-
engine oil 199/-
break down job 45/-
taxes 116.03/-
Total Cost of repair 1380/-