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The first ever identification of a cosmic ray accelerator as the consequenceof spacial and temporal correlation of IceCube event 170922A with flaring of ablazar TXS 0506+056 motivated us to look for other flaring blazars in Fermi-LAT3FGL catalog, which could be correlated with IceCube high energy track events.We have studied the Fermi-LAT light curves of blazars correlated with neutrinotrack events. Among the eight sources identified within 2$\sigma$ angularuncertainty of the IceCube track events selected in our study, we find only onesource 3FGL J2255+2409 was in flaring state during the neutrino detection. Wehave carried out a time dependent modelling of the multi-wavelength data fromthis blazar, and the neutrino event including leptonic energy losses andproton-proton interactions in its jet to determine whether it could be theorigin of the neutrino event. Our lepto-hadronic model estimates a jetluminosity of $L_j = 3.6 \times10^{47}$ erg/sec during the neutrino phase of3FGL/4FGL J2255+2409.

Correlation of highly variable blazars with TeV IceCube track events