(COURANT) — he freshman student who drowned in the Manchester High School pool last week was under water in the deep end for about 17 minutes as other students swam above him, a source said Monday.

A surveillance camera running at the pool last Wednesday showed Malvrick Donkor, 14, climbing down a ladder into the pool’s deep end, according to the source, who spoke on the condition of anonymity because the investigation is continuing.

“There’s no splashing, no flailing like you would typically think of,” said the source, who viewed the surveillance tape. “He just slipped under water. Other kids were swimming over the top of him, not knowing he was down below.”

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