  The $\pi^- + {^2{\rm H}} \rightarrow \gamma + n + n$, $\pi^- + {^3{\rm He}}
\rightarrow \gamma + {^3{\rm H}}$, $\pi^- + {^3{\rm He}} \rightarrow \gamma + n
+ d$, $\pi^- + {^3{\rm He}} \rightarrow \gamma + n + n + p$ and $\pi^- +
{^3{\rm H}} \rightarrow \gamma + n + n + n$ capture reactions are studied with
the AV18 two-nucleon potential and the Urbana~IX three-nucleon potential. We
provide for the first time realistic predictions for the differential and total
capture rates for all these processes, treating consistently the initial and
final nuclear states. Our results are based on the single nucleon
Kroll-Ruderman-type transition operator and concentrate on the full treatment
of the nuclear final state interactions. They are compared with older
theoretical predictions and experimental data.
