[3] It was thought to be a group of less than 50 people based in Bilbao, largely focused on the destruction of property, particularly those of American multinational corporations[1][3][4] and against other smaller Spanish companies involved in labor disputes,[5] in support of Workers' self-management and mobilization, although one of its attacks was responsible for the death of one individual and several for minor injuries of others.
He had placed a bomb next to the car of an industrialist with the surname Figanda, whose sausage company was involved in a strong labor conflict at the time, and was firing workers.
[10] The protest went through the streets of Pamplona, walking past the site of Gallardo's death, and some among the crowd chanted support for Iraultza and ETA, although relatives of Zabalza and other residents of Orbaizeta remained quiet.
[7] According to the newspaper El Pais, on Friday 27 June 1986 José Miguel Moros Peña (18), a resident of Portagalete and construction worker for Urgandía, a subcontractor for firms Dragados and OCP Construcciones (as of January 2019 a part of ACS Group) was starting a piece of drill machinery (later reported as a crane)[7] at around 7:50 am when a bomb attached to it exploded, fatally injuring him.
[3] An anonymous call was made prior to the detonation to the Santurzi Municipal Police at 11:45 pm on Monday 23 June 1986, and a bomb squad was sent out to check but reportedly found nothing.