Loud Blasts Rock Central Baghdad

Two rockets were fired in central Baghdad Tuesday night, a military source told Fox News.

One hit an apartment building that was across from an Iraqi police station and near the headquarters of the Coalition Provisional Authority (search), which is in the central "green zone." Two civilians were injured in that attack.

Another hit a bus station. No injuries were reported there.

And in what appears to have been a separate attack, a rocket-propelled grenade apparently was shot at a propane station or storage area but the blast did not cause any gas to ignite.

Enemy fighters this month have fired mortars on the "green zone" compound. But there had been no firing in that area since the U.S. military launched Operation Iron Hammer (search) to strike at guerrilla hideouts in the city.

Some Baghdad residents on Tuesday said a projectile exploded near the Mansour Melia Hotel, located about 300 yards from the compound.

Following the loud blasts, which occurred after 8 p.m., sirens could be heard briefly from the west bank of the Tigris River, where the green zone — a one-square-mile area that encompasses several buildings — is located. Sporadic small arms fire could also be heard from the same area.

Chief civilian administrator L. Paul Bremer (search) said earlier Tuesday the enemy fighters' recent attacks on the coalition itself were not having the desired effect, so they were turning to Iraqis who help occupation forces.

"The security situation has changed," Bremer said at a press conference with Gen. John Abizaid (search), the chief of the U.S. Central Command.

"They have failed to intimidate the coalition," he said. "They have now begun a pattern of trying to intimidate innocent Iraqis. They will not succeed ... If Saddam taught the Iraqis nothing else it was how to endure the depredations of thugs."

Abizaid said that the number of daily attacks on coalition forces were down by about half over the last two weeks. He gave no figures but U.S. officials have said U.S. forces were being attacked on average of 30-35 times a day.

"In the past two weeks, these attacks have gone down, attacks against coalition forces, but unfortunately we find that attacks against Iraqis have increased," Abizaid said. He said the attacks had increased not only in number but in severity.

Fox News' Dana Lewis and The Associated Press contributed to this report.