North America Gunman Detective

The laboratory wasn't far, Jimmy drove there and went straight to the explosives detection department, handing over the bag, "Please give me the report as soon as possible, highest priority."

The staff member took it with surprise, looking at Jimmy and asking, "Why? I only got the message to prioritize testing, I'll do this once I'm done with the current task."

Jimmy: "The explosion happened at Times Square, one hour ago, understand?"

The staff member raised an eyebrow, "I understand, it seems someone above is under a lot of pressure, give me a few hours, I'll have the report for you in the afternoon."

Jimmy: "Okay, just fax it to my office."

Jimmy left his office fax number and exited the laboratory, knowing that the efficiency there was usually not great, they would delay as long as they could unless forced, typically even with elevated priority it could take days.

On his way back, Jimmy called Mark, requesting that once they finish their investigation, they return to the office to summarize the current clues.

Mark's team had been investigating for a long time, but there were essentially no leads, most people in Times Square were tourists, and most who experienced the explosion had already left, only a few were nearby when the manhole cover blew off, but they hadn't noticed anything unusual at the time.

There are indeed a lot of surveillance cameras around the explosion site, but only two are close enough to clearly see the manhole explosion, the rest mostly just capture the crowd.

Some buildings' surveillance footage wasn't available yet, needing the FBI to negotiate with them properly, orders from above are required to obtain them, because not everyone cooperates with FBI investigations willingly, surveillance videos are considered their corporate assets, and forcible requisition requires the FBI to apply for a search warrant.

Jimmy and his team spent a long time in the office organizing notes, completely unable to identify suspects, now they could only wait for the screen and laboratory's explosive detection results.

Before leaving work, Jimmy finally received the faxed explosive detection results, it was confirmed that the explosive was ammonium nitrate, with the method of detonation still uncertain, speculated to be a detonator.

However, the fragments of explosives Jimmy provided didn't include the container for the ammonium nitrate, in fact, the cardboard and PCB fragments he brought were just the casing and control system, with no fragments from inside the explosive.

Ammonium nitrate is a widely used industrial explosive with moderate explosive power, stable at normal temperatures, insensitive to impact, collision, and friction, making transportation and storage convenient, but due to its wide application, its origin is difficult to determine.

Jimmy had no choice, so he called Ruiz, asking him to help contact the Anti-Terrorism Team, requesting them to send an explosives inspection team to examine the scene again.

A bomb attack is absolutely a terrorist attack, ever since 911 it has been entirely handled by the Anti-Terrorism Team, and the detection personnel have also been reassigned there, Jimmy and his team handling civil and criminal cases could only communicate through higher-ups if needed.

Professional explosives detection personnel set out again to conduct a round of detection in the sewers of Times Square, even though it was close to off-duty time, they had to choose overtime due to the higher-ups' demands in this kind of case.

Early the next morning, Jimmy received another initial detection report, explosives detection personnel conducted a thorough examination of the sewers, confirming that the amount of explosives was very small, and judging by the degree of damage to the pipe walls at the scene, there was essentially no damage, suggesting this explosion was akin to a provocative joke.

Due to the unique environment of sewers, apart from some suspicious fragments collected, there were no other findings, the low explosive power was the only result obtained so far.

Holding the report, Jimmy pondered for a moment, then stood up and went to Ruiz's office, "Ruiz, the explosive detection report is out."

Ruiz looked at the report in his hand, after a while he softly asked, "What do you think this bomber means?"

Jimmy: "I have two speculations, first, this is a warning, the perpetrator should come forward with demands for some organizations later, this explosion is just his way of saying hello.

Second, this is the start of a major bombing case, the perpetrator is simply using this explosion to confirm his ability to make bombs and their explosive power.

There are too few known clues at the moment, our investigation of the surveillance footage at the scene is still incomplete, currently no one has discovered any suspicious individuals before or after the explosion."

Ruiz: "The perpetrator might have entered the sewer from somewhere else and walked through it to install the device."

Jimmy: "We cannot rule out this possibility, but at the moment we can only investigate the footage around the site, we have no targets to choose from elsewhere."

Ruiz: "I understand, you can go back now, remember to contact NYPD, if there are any cases and leads related to explosions recently, transfer a copy to us."

Jimmy left Ruiz's office, and Ruiz picked up the phone and dialed the Anti-Terrorism Team.

Returning to his own office, Jimmy asked Julia to contact NYPD, instructing them to compile recent cases related to explosions, whether they're gas explosions or explosive detonations, to gather and organize everything.

Regardless of whether these explosions are related or not, they are the focus of Jimmy's investigation moving forward, aside from these cases, Jimmy also tasked Mark with looking through the system for all marked explosive operators, if necessary, contact the United States Demolition Association to obtain their list of certified personnel, seeking potential suspects.