This attack is listed as a probable motive for the mass shootings.

Most important of all, what was the probable motive of the developer?

Elizabeth now expected that she would produce a letter for her from Charlotte, as it seemed the only probable motive for her calling.

There were several probable motives for their first attack, on the Marinid Sultanate (in present-day Morocco).

"The most probable motive, at this time, appears to be robbery," the Commander said.

Forensics leads them to possible suspects, and possible suspects all have probable motives, but nothing seems to pan out.

These facts alone might qualify as probable motive, but Ms. Seaver's theory is more elaborate.

The probable motive for those experiments was to find out how soldiers made themselves sick in order to escape service in the Wehrmacht.

While there were no witnesses to the shooting, police are citing robbery as the probable motive.

Investigators are focusing on revenge as the probable motive in the killing, but officers here today said that threats from drug dealers would not cow them.