The accidents "for some reason" keep happening, he said.
Another accident, Wentworth said, as if trying to reassure her, and himself.
The accident interrupted service for about two and a half hours, the police said.
The earlier accidents, even if they happened, were minor and had no connection with the explosion, he said.
He took the situation in at a glance, said: "Was that an accident?"
"Better yet, an accident," said the minister of justice, laughing.
"But an accident, a suicide, there's no crime," she said as he walked past her toward the door.
Many of those guns are loaded and unlocked - "an accident waiting to happen," as the Mayor said.
The first Army medical helicopter landed at the scene just four minutes after the accident, a team of six officers said.
"We'd had a bad thing happen, an accident," the diplomat said.