The British Police offer more than 23,000 euros for information about the acid attacker. The 35-year-old suspect was last seen on Wednesday at 21:33 GMT leaving London's Tower Hill tube station.
The older victim remains sedated in a London hospital with injuries that could leave serious consequences, while those of the girls are less serious than thought, according to the Police. The suspect in the acid attack on a woman and daughters in London has a previous conviction for a sexual crime.