In a statement, the Lisbon Metropolitan Command of the PSP reports that it was throughout the day on Wednesday accompanying the outside of the Angolan consulate, in Alcântara, where the voting for Angola's general elections was taking place.
"At the end of the day, and after the polls closed, as there was a high number of people abroad, the PSP device was reinforced and remained until the employees, delegates and other stakeholders left the building", adds the communicated.
To avoid a possible escalation of tension, "it was decided that the delegates and employees would leave through a secondary door and would be accompanied by the Police to the bus that would transport them" to a hotel.
However, according to the PSP, some of the protesters who meanwhile moved to the bus "adopted a hostile behavior, throwing stones and various objects".
The police then carried out "a wave of dispersion with the use of force, to stop such behavior and guarantee the safety of the delegates, the police and the restoration of public order", after which the bus went to its destination accompanied by the PSP.
"From the throwing of objects, there was a policeman injured in the head, who was transported to the hospital for treatment, as well as damage to vehicles that were parked there", the police note added.
In images captured by cell phone and posted on social media, the police can be seen protecting the entry of several people on a bus, while the author of the video shouts that "MPLA personnel" are "escape on the bus".
"They didn't publish the minutes in Lisbon and they are running away (...) with our votes", says the author of the video.
Angola voted on Wednesday to choose a new President of the Republic and new representatives in the National Assembly, in general elections held for the first time in the diaspora.
The electoral process, which had around 1300 national and international observers, has been criticized by the opposition, considering it not very transparent.
The National Electoral Commission (CNE) announced this Thursday that the MPLA maintains an advantage, with 52.08 percent of the votes, followed by UNITA, with 42.98 percent, when 86.41 percent of votes in this Wednesday's general election.
With 77.12 percent of votes cast in Luanda, the National Union for the Total Liberation of Angola (UNITA) leads with 62.93 percent of the votes and the Popular Movement for the Liberation of Angola (MPLA) follows in second position with 33.06 percent, CNE spokesman Lucas Quilundo announced this Thursday.