According to the 'Pontiac Manuscript' Pontiac acquiesced, and the Saginaw chief killed Campbell 'with a blow of his tomahawk, and after cast him into the river.' Campbell's fellow-prisoner McDougall, along with two others, had escaped to the fort some days before.
The investment continued, although the attacks became less frequent.

The schooners manoeuvring in the river poured broadsides into the Indian villages, battering down the flimsy wigwams.

Pontiac moved his camp from the mouth of Parent's Creek to a position nearer Lake St Clair, out of range of their guns, and turned his thoughts to contrive some means of destroying the troublesome vessels.

He had learned from the French of the attempt with fire-ships against the British fleet at Quebec, and made trial of a similar artifice.

Bateaux were joined together, loaded with inflammable material, ignited, and sent on their mission but these 'fire-ships' floated harmlessly past the schooners and burnt themselves out.
Then for a week the Indians worked on the construction of a gigantic fire-raft, but nothing came of this ambitious scheme.
It soon appeared that Pontiac was beginning to lose his hold on the Indians.