Chemical/Biological Weapons in Gaza?

I don't whether this is just bluster...but it is frightening just because of their intent.

he Aksa Martyrs Brigades announced on Sunday that its members have succeeded in manufacturing chemical and biological weapons.

In a leaflet distributed in the Gaza Strip, the group, which belongs to Palestinian Authority President Mahmoud Abbas's Fatah Party, said the weapons were the result of a three-year effort.

According to the statement, the first of its kind, the group has managed to manufacture and develop at least 20 different types of biological and chemical weapons.

The group said its members would not hesitate to add the new weapons to Kassam rockets that are being fired at Israeli communities almost every day. It also threatened to use the weapons against IDF soldiers if Israel carried out its threats to invade the Gaza Strip.