? Police spent much of Monday searching along train tracks near Newark for a man wanted in connection with the death of a police officer.

Police believe the suspect, 33-year-old Eric Floyd, may have boarded a train in Philadelphia bound for either Newark or New York City. Police in Philadelphia say they received a tip with that information.

Police say Floyd is wanted for the shooting death of Philadelphia Police Sgt. Stephen Liczbinski, who was shot while responding to a report of a bank robbery Saturday. According to police, Floyd, along with two other men, robbed a Bank of America at a Shop Rite. Liczbinski was fatally shot with an assault rifle while searching for the men.

One suspect was captured and another was killed.

Earlier in the day, several trains on the Northeast Corridor line were stopped as police searched for Floyd. All trains have since returned to their normal schedules. A halfway house was also on lockdown briefly in Newark during the search.U.S. Marshals, Amtrak and NJ Transit Police, Newark and Elizabeth police, as well as the Essex County Sheriff's Department took part of the search.

Information on Sgt. Liczbinski Philadelphia Police Department Police bulletin on Eric Floyd