Clutch or something started ticking wen i slowed to stop ?

[Marunui]

Well today i took off from work to go home as usuall then i stoped at top of the drive way and first gear started to clunk click and stuff i pulled clutch in and it stop the noise i took off every thing ok then 5 miniutes down the road like a clunk bang i was only doing 60 so i changed down and pulled over . I looked down at motor nothing the bike was still hum n nice in idle so i just started riding it slow and smooth it got me all the way home no probs had a look around motor wen i got home just a bit oil leaking around cylinder cover but theres alwayz bn a bit of that going on ???? Has any one had this ?