  We report on recent progress in the calculation of the 3-loop massive Wilson
coefficients in deep-inelastic scattering at general values of $N$ for neutral
and charged current reactions in the asymptotic region $Q^2 \gg m^2$. Four new
out of eight massive operator matrix elements and Wilson coefficients have been
obtained recently. We also discuss recent results on Feynman graphs containing
two-massive fermion lines and present complete results for the bubble
topologies for all processes.
