SUWANEE, Ga. -- A gunman who was having financial problems held four firefighters for hours in a suburban Atlanta home, demanding his cable and power be turned back on, before being shot dead when SWAT members stormed the house, authorities said on Wednesday. The hostages had cuts and bruises from explosions officers set off to distract the gunman before moving in, but they will be fine, a fire official said.

Minutes before the police announcement on the resolution, a blast could be heard a quarter-mile away from the home, shuddering through the Suwanee neighborhood and setting off car alarms.

Earlier Wednesday, five firefighters responded to what seemed like a routine medical call, but were taken hostage by an unidentified suspect inside the house, police said. The gunman released one of the firefighters to move a firetruck but held the other four.

Dozens of police and rescue vehicles surrounded the home and a negotiator was keeping in touch with the gunman, police said. The situation remained tense until the blast rocked the neighborhood of mostly two-story homes and well-kept lawns. Residents unable to get into their neighborhood because of the police cordon flinched and recoiled as the blast went off.

Soon after the stun blast, officers exchanged gunfire with the suspect and a SWAT member was shot in the hand or arm, but should be fine, said Gwinnett County Police Cpl. Edwin Ritter. Ritter would not say how the gunman was fatally shot, saying it was being investigated.

"The explosion you heard was used to distract the suspect, to get into the house and take care of business," Ritter said during a news conference minutes after the resolution. He said the situation had gotten to the point at which authorities believed the lives of the hostages were in "immediate danger."

The gunman, who has not been identified, demanded several utilities be restored, Ritter said. According to public records, the home is in foreclosure and has been bank-owned since mid-November.

Firefighters were able to use their radios to let the dispatch center know what was going on, said Fire Capt. Tommy Rutledge said.

"It's an unfortunate circumstance we did not want this to end this way," Ritter said. "But with the decisions this guy was making, this was his demise."

Ritter said officials decided to "get control of the situation" and do it swiftly.

Rutledge said the medical call seemed routine and firefighters did not believe there was any danger. One engine and one ambulance responded. Ritter said authorities didn't yet know if the suspect may have faked a heart attack or some other problem to bring the firefighters to his home.

"Our firefighters responded to a call they respond to hundreds of times, and that's a medical emergency," Rutledge said.

Two ambulances could be seen leaving after the gunfire ended.

Asked what kind of weapon or weapons the suspect had, Ritter said he didn't immediately know. He said investigators were in the house where the suspect's body remained.

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Lucas reported from Atlanta.