An outburst was detected in the high-mass star-forming region G24.329+0.145 at the 6.7 GHz methanol maser line under the monitoring program with the 32 m Torun dish (Wolak et al. 2019). Multi-frequency and multi-epoch studies started immediately under the international M2O cooperation in order to analyze this event and provide some constraints on episodic disc accretion. Using the VLBA and EVN interferometers we observed the methanol maser lines at the 6.7 and
12.2 GHz transitions. We present preliminary results of our detailed variability studies.