—This report presents the results of an experiment aimed at observation of the muon catalyzed 3 He d fusion reaction 3 He + (3.66 MeV) + p (14.64 MeV) + μ which might occur after a negative muon stop in the D 2 + 3 He gas mixture. The basic element of the experimental setup is a Time Projection Chamber (TPC) which can detect the incoming muons and the products of the fusion reaction. The TPC operated with the D 2 + 3 He (5%) gas mixture at 31 K temperature. About 3 Heμ d molecules were produced with only 2 registered candidates for the muon catalyzed 3 He d fusion with the expected background events. This gives an upper limit for the probability of the fusion decay of the 3 Heμ d molecule at 90% C.L. Also presented are the measured formation rate of the 3 Heμ d molecule and the probability of the fast muon transfer from the excited to the ground state of the atom . The obtained results are compared with the previously published data.