The married couple police say carried out Wednesday's shooting rampage that left 14 people dead in San Bernardino, California, took pains to erase their digital footprints in the hours leading up to the deadly attack, according to a published report.

The husband-and-wife team, identified as Syed Rizwan Farook and Tashfeen Malik, stormed a conference room inside the Inland Regional Center as a holiday party took place Wednesday and sprayed the area with bullets, authorities said. The couple, who wore military-style gear and were armed with high-powered rifles, pipe bombs, and 1,500 rounds of ammunition, were killed by police following a high-speed chase following a multi-hour manhunt. According to a report published Thursday by The Washington Times, they took actions to hide their electronic trail. The report stated:

Officials involved in the investigation say the couple appeared to have gone to great lengths to conceal their plans—a cell phone recovered from Ms. Malik’s body was newly purchased and had had been used only recently. Two other cell phones that were recovered had been smashed with a hammer and were expected to be sent to the FBI’s forensic lab in Washington for examination. Authorities also noted that a hard drive and motherboard are missing from a computer found at the Redlands, California home the couple rented.

Not all of their digital footprints were wiped clean, according to other reports. This Daily Caller post said Farook's online dating profile claimed he enjoyed reading religious books and engaging in shooting practice. The New York Times, meanwhile, said that an online baby registry in Malik's name showed the couple was expecting daughter to be born in May of this year and listed diapers, baby wash, a car seat, and safety swabs.

Investigators are looking into the possibility that Farook, who was a US citizen, and Malik, who held a Pakistani passport, had ties to Islamist extremists either while in the US or during trips the couple made to the Middle East, including to Saudi Arabia, according to news reports.

Post updated to add "of this year" to the fifth paragraph.