or PR was seen/ phone pings in the park before he was arrested.
Maybe he was in the area of the park 'cruising' between Beverley Road and the Beresford entrance to the park and during that 'cruise' he randomly encountered Libby?
HOWEVER - the one MAJOR thing about is his offending history - there is a cluster of offences, all of the same type in immediate proximity to his home - spying on and burgling his close neighbours - then there is ONE offence of public indecency, which is utterly different to burglaring, which occurred along Wellesley 10 days before she went missing.
I believe this is significant. Why Wellesley? There is nothing special along Wellesley, it's decent family homes, it's not like it's crammed with student nurses in halls or large scale student HMOs. The students along there are utterly blended in with the family homes and you cannot spot them, unlike along other streets (around Newland) that are clearly majority student HMOs.
Perhaps, on one of his perv cruises, he noticed Libby sloshing home drunk one night, and noted whereabouts she lived, and made sure to check up again around midnight on successive cruises, waiting for her to be staggering to her door alone.
What happened on the night of his offending in Wellesley to bring him from Newland Avenue to Wellesley? Was he already aware of Libby by then and watching her waiting for an opportunity?
AND did he walk or drive to Wellesley from Raglan Street that night? I am willing to bet that when he was along Wellesley 'offending' that night that he parked his car along Haworth Street in the same spot. (How did the Police know about this particular offence? Was it captured/reported on cctv? Or did he film himself on his phone?)
Talking to the chap from the local paper, he was echoing the thoughts about trafficking. If that is a possibility, it may be that PR has more to gain/lose from his associates than he has from the British Police or justice system, if we're looking Eastern Europe/Russia way. Especially if PR is being briefed.
We are faced with 2 horrific scenarios;
1) something horrific has happened to this poor girl
2) the Police HAVE NOTHING and will have nothing