Using the Haystack Observatory 37-m radio telescope we have undertaken a search for emission in the 2 _ { 0 } -3 _ { 1 } E rotational transition of methanol in its first torsionally excited state ( v _ { t } = 1 ) at 44.9 GHz .
We examined seven galactic sources – six strong emitters of Class II methanol maser lines and Orion KL , the only source where this line had been previously detected .
We confirm ( at a level of 5 \sigma ) the previous detection and report two new detections – a reliable ( 9 \sigma ) detection in W3 ( OH ) and a marginal ( 3.5 \sigma ) detection in NGC 6334F .
Upper limits for other sources are presented .
Although we did not see obvious signatures of maser amplification in this transition in any source , arguments in favor of weak masing in W3 ( OH ) are presented .