New York ( CNN ) -- New York City police are investigating the death of a Mexican diplomat 's 4-month-old son who was taken to a hospital with bruises on his body , authorities said Wednesday . The infant , Eduardo Rocha Ovalle , was unresponsive when his parents took him to NYU Medical Center about 9 p.m. Tuesday , police said . The baby was declared dead about half an hour after arriving at the hospital . The Consulate General of Mexico in New York confirmed that the baby 's father is `` credited as part of the consular staff . '' The identities of the parents were not released . New York Police Commissioner Ray Kelly told reporters Wednesday that investigators were awaiting autopsy results but that an official from the medical examiner 's office declared the death `` somewhat suspicious '' after examining the body at the hospital . `` There were bruises on the baby 's body , and the investigation is going forward , '' Kelly told a news conference . In its statement , the Mexican consulate said , `` As required by international law , we will offer all assistance and consular protection required by the parents under these circumstances and the Consulate will closely monitor the developments in this case . We are in contact with the relevant U.S . authorities . '' The consulate declined to comment further . `` The case will be treated in accordance with the local legal system , '' the statement said . Referring to the father 's diplomatic status , Kelly said : `` His only diplomatic immunity , if you will , is pursuant to his official duty . '' Wanda Hernandez , 52 , superintendent of the building where the infant lived with his parents , told CNN affiliate NY1 that at about 1 a.m. Wednesday police questioned her about the family after the baby 's death . `` I stood in shock , '' she said . `` Because she seemed like a very good mother , and she , like , adores that baby . You know she adores him . I remember her taking pictures and every time ... I say , 'How 's the baby ? ' and she would show me pictures of the baby . For Halloween , she would dress him up . '' Hernandez added , `` They looked excited ... she seemed very happy with the baby . '' No arrests have been made , Kelly said , and the special victims unit is handling the case . `` We have no cause of death at this time , '' Kelly said . CNN 's Rande Iaboni , Brian Vitagliano and Maria Santana contributed to this report .
The infant son of a Mexican citizen arrived at a hospital with bruises , police say . The boy died about 30 minutes later , and the death was found ` ` somewhat suspicious '' The Mexican consulate says it will assist the investigation and is in contact with U.S. officials .