MALDEN, Mass. -- Police in Malden are trying to find out what led up to the drowning of a 5-year-old autistic boy Tuesday night.

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Kelley Tuthill Reports On Malden Drowning Investigation

Newscenter 5's Kelley Tuthill reported that Kagua Njenga was found face down in a pool at an apartment complex. Police said it appeared that none of the many people around the pool tried to help the boy.

The health inspector was at Pine Banks Village apartment complex in Malden to make sure the pool did not have any problems. As for exactly what happened, investigators are still looking for answers. The family, still distraught, simply released a statement remembering their child as a "sweet, happy boy."

Board of Health officials spent Wednesday morning at the scene.

"It was a hot night anything can happen we see it every year it is unfortunate and my feelings go out to the family. If there is anything we can do we will," Chris Webb of the Board of Health said.

The pool will stay closed pending the heath inspector's report.

According to police, the child with autism had been at a neighbor's home before the drowning.

"They (the parents) left the boy for about 10 minutes and came back to pick him up some 10 minutes later. The woman in the apartment was unaware of the fact that the boy had left the apartment," Malden Police Department's Sgt. Joseph Pontbriand said.

But perhaps most disturbing, and still unexplained, was why no one pulled Njenga out of the pool.

"Ten to 12 people were standing there motioning (officials) to come their way, pointing at the pool. When (officials) turned the corner, the child was lying face down in the water. The water is only five feet deep so they could have just walked in and pulled the child out," Malden Police Department Sgt. Mark Mullaney said.

On Wednesday, the family released a statement and a picture of their son. In the statement they said, " We would like to thank all those who attempted to rescue Kagua. He was a sweet, happy child. No words can express our grief at this loss."