WASHINGTON -- A delayed response by D.C. Fire and EMS workers may be to blame for the death of a man in the District, officials said.

Medics were dispatched to the unit block of G Street in Northeast on Wednesday just after 1 p.m. for a report of a man having an apparent seizure.

The emergency crew instead mistakenly went to the unit block of G Place in Northeast, about a block away.

The crew searched the area for a while and made a call to the phone that reported the incident. The crew realized it had responded to the wrong area.

It ended up almost 12 minutes for basic life support crews to arrive at the correct scene, and 14 minutes for advanced life support to arrive.

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It took about 30 minutes for the man to make it to Howard University Hospital, where he later died.

D.C. Mayor Adrian Fenty and Fire Chief Dennis Rubin have admitted that emergency workers made the mistake.

The fire department's trucks and ambulances do not have GPS systems. Rubin said human error is to blame. The driver and another person in the vehicle thought they were on the correct street.

"We're sorry about that error. Information will continue to flow from the Medical Examiner's Office from that aspect, and we'll see where it takes us," Rubin said.

"Quite frankly, when you respond to 150,000 calls a year, I'm surprised that it only happens every once in a while," Rubin said.

It is unclear if the delay contributed to the patient's death.

The fire department's response goal is to get an EMT with a defibrillator to the patient within six minutes and 30 seconds of dispatch. Advanced life support teams should get to patients within eight minutes of dispatch.

There has been no word of any pending charges or investigation.

Officials said emergency vehicles in the city are being outfitted with navigational equipment. There are about 30 devices on order. The goal is to get them in 1,000 vehicles.