Fire investigators in Henderson are probing a two-alarm blaze that destroyed more than 32 apartment units and caused about $1 million in damage before dawn at a construction site in the Green Valley area. Henderson fire investigators say the 4:20 a.m. Wednesday blaze at the complex off Wigwam Parkway and Gibson Road is suspicious. Battalion Chief Doug Koopman says a pair of two-story wood-framed buildings with 16 apartments each were destroyed. A third nearby building under construction was damaged.