The scattering of neutrons in He4 has been investigated for neutrons with energies of from 16 to 23.4 Mev with a helium-filled ionization chamber. A pronounced resonance has been found at a neutron energy of 22.15+/-0.12 Mev. This resonance corresponds to an excitation energy in He5 of 16.72+/-0.10 Mev which is the same excitation energy as that obtained for the maximum in the T(d, n)He4 cross section. The neutron scattering experiments indicate that the level in He5 has a width of about 100 kev which is much narrower than the ground state of He5. This state in He5 probably has angular momentum and parity of 32+ and is made up of two neutrons and a proton in the S shell and one proton and one neutron in the P shell. Such a configuration would explain the large deuteron reduced width of the T(d, n)He4 reaction and the small neutron width.