Recently 2-dimentional (2D) magnetic materials have gained a lot of attention due to their peculiar magnetic properties, originated from the quantum confinement. Here, we report on the synthesis, magnetic and electrical transport properties of Mo doped Cr1-xMoxSe (x = 0.0, 0.01, and 0.03) polycrystalline systems. Room temperature powder X-ray diffraction (XRD) data confirm that all the samples are formed into the hexagonal crystal structure with a space group of P63/mmc. Electrical resistivity measurements suggest that all the samples are metallic in nature. From magnetic measurements, we observe a bifurcation between ZFC and FC curves in all the samples almost at the same temperature of 225 K, suggesting for an antiferromagnetic transition at this temperature that is not affected with Mo doping. Magnetization measurements suggest for a mixed magnetic phase at low temperatures, means, weak ferromagnetism is found in addition to the antiferromagnetic ordering for the parent system. Mo doping leads to a couple of additional antiferromagnetic magnetic transitions. We further noticed decreasing magnetic moment with increasing Mo doping.