Authorities in the search for a Leesburg, Fla., boy who vanished more than three weeks ago will discuss another investigative direction the search may head in Monday, Local 6 News has learned.

Trenton Duckett was reported missing 22 days ago by his mother, Melinda Duckett, who committed suicide more than a week ago.

Since the suicide, investigators have been leaning toward the possibility that Melinda Duckett staged her son's disappearance.

Monday, police will ask for the public's help again but this time they have a different timeline for Trenton Duckett and his mother's whereabouts the weekend of the child's disappearance, Local 6's Mike DeForest said.

"We are told this is a different investigative direction than the tip that led investigators to the Ocala National Forest," DeForest said.

Authorities continued their fourth day of searching near Farles Lake in the Ocala National Forest in Marion County. Helicopters, dive teams, search dogs and ground crews have been used in the search.

Searchers have been in the area after a tipster said he saw and possibly talked with Melinda Duckett.

"It is very treacherous work," Marion County sheriff's Capt. James Pogue said. "The water is murky. It is not like swimming in a swimming pool, where you see everything when you go underwater. It is really just a touch-and-feel type of game."

Searchers formed a human dragnet around Farles Lake Sunday but found nothing.

More than 150 officers and volunteers, 17 cadaver dogs and a helicopter were used in the search near the Farles Lake area of the forest.

Hundreds Of Tips

Local 6 News reported that since the boy vanished on Aug. 27, tips have come in by the hundreds but there are still more to check out.

"We are still trying to firm up Melinda's timeline in the 24 to 48 hours prior to the abduction," Leesburg police Capt. Steve Rockefeller said.

Leesburg police said a multi-agency task force is working other routine leads and plans to regroup Monday and Tuesday to plot a new course in the search for the toddler.

Watch Local 6 News for more on this story.