JERSEY CITY, N.J. (AP) — Mourners are set to begin saying their goodbyes to a rookie Jersey City police officer slain in the line of duty.

A wake for Officer Melvin Santiago is scheduled for this afternoon, and his funeral for tomorrow morning.

The 23-year-old was killed while responding to reports of an armed robbery early Sunday at a 24-hour drug store. Authorities say the suspect, 27-year-old Lawrence Campbell, had grabbed a security guard's gun and waited for police to arrive before opening fire. He also was killed.

Tensions in the city have been raised this week by a sidewalk memorial to Campbell erected in his neighborhood. Mayor Steven Fulop ordered the display taken down.

Police have said in a leaked memo that an informant spoke of possible retaliation against police by Bloods gang members.

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