CAIRO - Egyptian security officials said on Tuesday that authorities had arrested a supporter of deposed Islamist President Mohamed Mursi suspected of involvement in a rocket-propelled grenade attack on a state-owned satellite station in Cairo.
Any link between the suspect and Mursi in the Oct. 7 attack in the capital is likely to be used to justify tougher measures against Islamists, who authorities have portrayed as terrorists since the army seized power on July 3.
Two people were wounded in the attack in the Maadi suburb of Cairo, the same day that suspected militants killed six Egyptian soldiers near the Suez Canal.
Security officials said a clothes merchant identified as Moataz Mahmoud had been detained. Authorities found weapons including parts of an RPG resembling the ones used in the Maadi attack and a machinegun in his apartment, they said.
"We have strong suspicions that he was involved in the attack," said one of the security officials, adding that the man is a supporter of Mursi.
Security officials said Mahmoud participated in a weeks-long sit-in in northeast Cairo that was organised by Mursi's Muslim Brotherhood movement.
Police and soldiers moved in to clear the vigil in August, killing hundreds of protesters. Brotherhood supporters said Egyptian forces shot at unarmed civilians, but the authorities said they were defending themselves after coming under attack.
Authorities accused the Brotherhood of storing weapons at the site, an allegation the movement has denied.