may be because he thought If one god send him to hell the other one can rescue him from it....
there can be many possible reasons....
1.he may have been shown the after condition of his home and family...
2.
how their family were hated in their own town and village..
3.so, called jannat after jehad seems to be dream after 3rd degree from police.
4.his all friends died and their body was kept in front of him and he begged his mercy.
5.he was broken from within and has ambivalence for his own religion and thought may be other god can save him in after life...