NEW YORK (AP) – The city will investigate the 22 or more deaths linked to last week’s heat wave to see if there are any trends to be aware of in the future, Mayor Michael Bloomberg said Sunday.

Bloomberg said that city health department Commissioner Thomas Frieden and chief medical examiner Charles Hirsch would prepare the report and share it with the Office of Emergency Management.

“We want to see if there’s anything more we could have possibly done, and in my radio address this morning I asked all New Yorkers headed to their houses of worship this morning to say a prayer for those that we lost,” Bloomberg said before marching in the Ecuadorean Heritage Pride Parade in Queens.

The medical examiner’s office on Sunday added two more deaths to the total caused by the heat wave. Both victims, a 56-year-old man and an 80-year-old woman, died Friday in Queens of heat stroke, spokeswoman Ellen Borakove said. The toll could rise beyond 22 as the office continues to conduct autopsies.

Bloomberg declared a state of emergency July 31 as the heat wave approached and urged New Yorkers to check on elderly or isolated neighbors. The city opened hundreds of cooling centers for those without air conditioning and kept swimming pools and senior centers open late.

The mayor said Sunday that he was “personally saddened by these losses and on behalf of all the 8.2 million New Yorkers, my thoughts and prayers are with the families and the loved ones who passed away.”

AP-ES-08-06-06 1644EDT