We report on VLBI obsevations of NGC 1275 with VLBI Expolaration of Radio Astrometry ( VERA ) and Very Long Baseline Array ( VLBA ) during 2008 and 2013 at 15 , 22 and 43 GHz .
Our observations provide long-term variations in the radio flux and structure of the inner jet in NGC 1275 on sub-parsec scales , particularly at C3 which is a new radio component accountable for the recent active state in radio regime since early-2000s .
We found the apparent velocity of C3 was \beta _ { app } = 0.267 \pm 0.007 , which was consistent with typical velocities of the hot spot and/or radio lobes in the young radio sources .
Furthermore , the radio flux and size of C3 had simultaneously increased during September 2007 and May 2012 with keeping optically-thin spectra , suggesting that the particle acceleration occurred inside C3 as generally seen in the hot spots of the radio lobes .
Our new observations suggest that C3 is a new-born hot spot and/or radio lobe at a very early stage of its evolution .
Our results imply the radio lobes in the radio galaxies might be already formed on sub-parsec scales from the central SMBH and might play an important role to generate \gamma -ray emission in the young radio sources .