by the Big Bang Nucleosynthesis bounds of $\tau \la 1\,$s. If this lifetime is rather long, the decay of the mediator will occur a long distance away from the point of the original WIMP annihilation. Denoting the WIMP particle $\chi$ and the mediator particle $V$, assuming $\chi\chi\to 2V$ as the main annihilation channel, and taking $m_V \ll m_\chi$, we arrive at the following estimate for the mediator travel distance: L = c \_V \_V = 310\^6 [km]{} . \[L\] Such large boosts $\gamma_V = m_\chi/m_V$ are easily achieved if the the dark matter mass is near the electroweak scale and the mediator mass is below a GeV. With regard to the annihilation of WIMPs captured within the Sun, one can see that this distance may very well exceed the solar radius ($R_\odot = 6.96\times 10^{5}$ km) in which case, unlike conventional WIMPs, most of the decay products will not be absorbed. For somewhat shorter lifetimes, the interesting possibility emerges of mediators produced by WIMP annihilation in the center of the Earth decaying directly into charged particles within neutrino telescopes. A schematic illustration of this new indirect mechanism of probing secluded WIMP models is shown in Fig. \[fig-scheme\].

A sub-GeV mass 