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New York Sate Troopers stand on the Bear Street Bridge as a diving crew looks for baby Maddox Lawrence in Onondaga Creek in Syracuse near Destiny mall on Tuesday, Feb. 23, 2016 . The 21 month-old's body was discovered shortly after this photo was taken.

(Michael Greenlar | mgreenlar@syracuse.com)

This article by Syracuse.com writers Elizabeth Doran and Douglass Dowty.

Divers shortly after noon Tuesday pulled a small yellow bag from the water of the Inner Harbor, got into a boat and made their way to the shore.

The divers were working with other authorities on the search for baby Maddox Lawrence who disappeared with her father, Ryan Lawrence, on Saturday night. Police have now charged the father with killing his daughter.

Maddox is believed to be dead, a law enforcement source said this afternoon. (District Attorney William Fitzpatrick later confirmed the child was dead and that he would handle prosecution of the homicide.)

Two divers spent about half an hour in the water in the Inner Harbor near Destiny mall Tuesday. A boat with several other divers hovered under the west side of the Bear Street bridge near the submerged divers.

The divers then left the water, not far from Destiny mall and the Inner Harbor. One diver left what looked like a reflective marker in the water to show the location the yellow item had been found. With Syracuse police not releasing any information on the case or commenting, it could not be determined what the yellow bag was being used for.

Numerous onlookers gathered near the pavilion along the Onondaga Creek Walk, and many expressed sadness and shock as news traveled that Maddox had been pulled from the water.

A state Amber Alert alert went out Sunday morning, saying Ryan Lawrence, father of young Maddox Lawrence, left home with his daughter Saturday after leaving information that he was going to harm himself and possibly the child.

Ryan Lawrence, 24, had a history of health issues and is emotionally unstable, according to the state Amber Alert website.

The Amber Alert was lifted Tuesday afternoon.

Ryan Lawrence, who was taken into custody Monday night, was reportedly with authorities at the Inner Harbor today, helping with the search.

Police were tipped off about Lawrence's whereabouts Monday by a former employee of a thrift store in Baldwinsville that he often frequented, according to a source. The employee saw his picture in the media and went to the store to tell workers there to watch for him, the source said. It was then that the former employee saw him, the source said.

Police searched numerous sites in the Baldwinsville area, but concentrated efforts today in the creek along the walkway.

Morgan Lawrence, the toddler's mother, made a tearful plea for her daughter's return Sunday night.