The FBI issued a fresh appeal for help to identify the suspect who planted two live pipe bombs near the Capitol the night before the Jan. 6 riots, indicating that the hooded figure captured by area surveillance cameras may have been operating from a local park.

The nine-month search for the bomb suspect, who placed devices at both the Democratic and Republican Party headquarters, remains perhaps the most enduring mystery related to the deadly siege.

The explosives, ultimately discovered on the day of the attacks and disarmed by authorities, were placed between 7:30 and 8:30 p.m. the night before, officials have said.

In the latest appeal, officials released a new video of the man, showing him taking a seat on a park bench while carrying a backpack and appearing to check a mobile phone.

Read more: USA Today