  In a recent paper --F.M. Marques et al, PRC 65 (2002) 044006-- a new approach
to the production and detection of free neutron clusters was proposed and
applied to data acquired for the breakup of 14Be. Six events that exhibited
characteristics consistent with a bound tetraneutron were observed in
coincidence with 10Be fragments. Here, two issues that were not considered in
the original paper are addressed: namely the signal expected from a low-energy
4n resonance, and the detection of a bound 4n through proccesses other than
elastic scattering by a proton. Searches complementary to the original study
are also briefly noted.
